uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/filesystems/bcache-tools/bcache-udev-modern.patch

@@ -0,0 +1,52 @@
+This patch does two things:
+1) Drops probe-bcache, so now new util-linux detecting functionality is used.
+2) Drops bcache-register, using kmod (built in udev) and moving registering device
+   into rule using 'sh'.
+This reduces things that need to be present in initrd, replacing them with already
+existing functionality and reducing overall initrd size.
+
+diff --git a/69-bcache.rules b/69-bcache.rules
+index 5d28e70..6a52893 100644
+--- a/69-bcache.rules
++++ b/69-bcache.rules
+@@ -10,15 +10,11 @@ KERNEL=="fd*|sr*", GOTO="bcache_end"
+ # It recognised bcache (util-linux 2.24+)
+ ENV{ID_FS_TYPE}=="bcache", GOTO="bcache_backing_found"
+ # It recognised something else; bail
+-ENV{ID_FS_TYPE}=="?*", GOTO="bcache_backing_end"
+-
+-# Backing devices: scan, symlink, register
+-IMPORT{program}="probe-bcache -o udev $tempnode"
+-ENV{ID_FS_TYPE}!="bcache", GOTO="bcache_backing_end"
+-ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
++GOTO="bcache_backing_end"
+ 
+ LABEL="bcache_backing_found"
+-RUN+="bcache-register $tempnode"
++RUN{builtin}+="kmod load bcache"
++RUN+="/bin/sh -c 'echo $tempnode > /sys/fs/bcache/register_quiet'"
+ LABEL="bcache_backing_end"
+ 
+ # Cached devices: symlink
+diff --git a/Makefile b/Makefile
+index 3f8d87b..15638a7 100644
+--- a/Makefile
++++ b/Makefile
+@@ -9,7 +9,7 @@ all: make-bcache probe-bcache bcache-super-show
+ 
+ install: make-bcache probe-bcache bcache-super-show
+ 	$(INSTALL) -m0755 make-bcache bcache-super-show	$(DESTDIR)${PREFIX}/sbin/
+-	$(INSTALL) -m0755 probe-bcache bcache-register		$(DESTDIR)$(UDEVLIBDIR)/
++#	$(INSTALL) -m0755 probe-bcache bcache-register		$(DESTDIR)$(UDEVLIBDIR)/
+ 	$(INSTALL) -m0644 69-bcache.rules	$(DESTDIR)$(UDEVLIBDIR)/rules.d/
+ 	$(INSTALL) -m0644 -- *.8 $(DESTDIR)${PREFIX}/share/man/man8/
+ 	$(INSTALL) -D -m0755 initramfs/hook	$(DESTDIR)/usr/share/initramfs-tools/hooks/bcache
+diff --git a/bcache-register b/bcache-register
+index 9b592bc..75b4faf 100755
+--- a/bcache-register
++++ b/bcache-register
+@@ -1,4 +1,3 @@
+ #!/bin/sh
+-/sbin/modprobe -qba bcache
+ test -f /sys/fs/bcache/register_quiet && echo "$1" > /sys/fs/bcache/register_quiet
+ 

pkgs/tools/filesystems/bcache-tools/default.nix

@@ -0,0 +1,63 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, util-linux, bash }:
+
+stdenv.mkDerivation rec {
+  pname = "bcache-tools";
+  version = "1.0.7";
+
+  src = fetchFromGitHub {
+    owner = "g2p";
+    repo = "bcache-tools";
+    rev = "v${version}";
+    hash = "sha256-Ors2xXRrVTf8Cq3BYnSVSfJy/nyGjT5BGLSNpxOcHR4=";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ util-linux ];
+
+  # * Remove broken install rules (they ignore $PREFIX) for stuff we don't need
+  #   anyway (it's distro specific stuff).
+  # * Fixup absolute path to modprobe.
+  prePatch = ''
+    sed -e "/INSTALL.*initramfs\/hook/d" \
+        -e "/INSTALL.*initcpio\/install/d" \
+        -e "/INSTALL.*dracut\/module-setup.sh/d" \
+        -e "s/pkg-config/$PKG_CONFIG/" \
+        -i Makefile
+  '';
+
+  patches = [
+    ./bcache-udev-modern.patch
+    ./fix-static.patch
+  ];
+
+  makeFlags = [
+    "PREFIX=${placeholder "out"}"
+    "UDEVLIBDIR=${placeholder "out"}/lib/udev/"
+  ];
+
+  preBuild = ''
+    sed -e "s|/bin/sh|${bash}/bin/sh|" -i *.rules
+  '';
+
+  preInstall = ''
+    mkdir -p "$out/sbin" "$out/lib/udev/rules.d" "$out/share/man/man8"
+  '';
+
+  meta = with lib; {
+    description = "User-space tools required for bcache (Linux block layer cache)";
+    longDescription = ''
+      Bcache is a Linux kernel block layer cache. It allows one or more fast
+      disk drives such as flash-based solid state drives (SSDs) to act as a
+      cache for one or more slower hard disk drives.
+
+      This package contains the required user-space tools.
+
+      User documentation is in Documentation/bcache.txt in the Linux kernel
+      tree.
+    '';
+    homepage = "https://bcache.evilpiepirate.org/";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = [ maintainers.bjornfor ];
+  };
+}

pkgs/tools/filesystems/bcache-tools/fix-static.patch

@@ -0,0 +1,22 @@
+diff --git a/bcache.c b/bcache.c
+index 8f37445..79806d8 100644
+--- a/bcache.c
++++ b/bcache.c
+@@ -26,7 +26,7 @@
+  * x^7 + x^4 + x + 1
+ */
+ 
+-static const uint64_t crc_table[256] = {
++const uint64_t crc_table[256] = {
+ 	0x0000000000000000ULL, 0x42F0E1EBA9EA3693ULL, 0x85E1C3D753D46D26ULL,
+ 	0xC711223CFA3E5BB5ULL, 0x493366450E42ECDFULL, 0x0BC387AEA7A8DA4CULL,
+ 	0xCCD2A5925D9681F9ULL, 0x8E224479F47CB76AULL, 0x9266CC8A1C85D9BEULL,
+@@ -115,7 +115,7 @@ static const uint64_t crc_table[256] = {
+ 	0x9AFCE626CE85B507ULL
+ };
+ 
+-inline uint64_t crc64(const void *_data, size_t len)
++uint64_t crc64(const void *_data, size_t len)
+ {
+ 	uint64_t crc = 0xFFFFFFFFFFFFFFFFULL;
+ 	const unsigned char *data = _data;