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/security/sbsigntool/autoconf.patch

@@ -0,0 +1,29 @@
+--- sbsigntools/configure.ac	2018-09-25 10:30:00.878766256 -0500
++++ configure.ac.new	2018-09-25 10:34:56.231277375 -0500
+@@ -71,15 +71,16 @@
+ # no consistent view of where gnu-efi should dump the efi stuff, so find it
+ ##
+ for path in /lib /lib64 /usr/lib /usr/lib64 /usr/lib32 /lib/efi /lib64/efi /usr/lib/efi /usr/lib64/efi; do
+-    if test -e $path/crt0-efi-$EFI_ARCH.o; then
+-       CRTPATH=$path
++    if test -e @@NIX_GNUEFI@@/$path/crt0-efi-$EFI_ARCH.o; then
++       CRTPATH=@@NIX_GNUEFI@@/$path
++       break
+     fi
+ done
+ if test -z "$CRTPATH"; then
+    AC_MSG_ERROR([cannot find the gnu-efi crt path])
+ fi
+ 
+-EFI_CPPFLAGS="-I/usr/include/efi -I/usr/include/efi/$EFI_ARCH \
++EFI_CPPFLAGS="-I@@NIX_GNUEFI@@/include/efi -I@@NIX_GNUEFI@@/include/efi/$EFI_ARCH \
+  -DEFI_FUNCTION_WRAPPER"
+ CPPFLAGS_save="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $EFI_CPPFLAGS"
+@@ -90,5 +91,5 @@
+ AC_SUBST(CRTPATH, $CRTPATH)
+ 
+ AC_CONFIG_FILES([Makefile src/Makefile lib/ccan/Makefile]
+-		[docs/Makefile tests/Makefile])
++		[docs/Makefile])
+ AC_OUTPUT

pkgs/tools/security/sbsigntool/default.nix

@@ -0,0 +1,53 @@
+{ lib, stdenv
+, fetchgit, autoconf, automake, pkg-config, help2man
+, openssl, libuuid, gnu-efi, libbfd
+}:
+
+stdenv.mkDerivation {
+  pname = "sbsigntool";
+  version = "0.9.1";
+
+  src = fetchgit {
+    url = "https://git.kernel.org/pub/scm/linux/kernel/git/jejb/sbsigntools.git";
+    rev = "v0.9.1";
+    sha256 = "098gxmhjn8acxjw5bq59wq4xhgkpx1xn8kjvxwdzpqkwq9ivrsbp";
+  };
+
+  patches = [ ./autoconf.patch ];
+
+  prePatch = "patchShebangs .";
+
+  nativeBuildInputs = [ autoconf automake pkg-config help2man ];
+  buildInputs = [ openssl libuuid libbfd gnu-efi ];
+
+  configurePhase = ''
+    substituteInPlace configure.ac --replace "@@NIX_GNUEFI@@" "${gnu-efi}"
+
+    lib/ccan.git/tools/create-ccan-tree --build-type=automake lib/ccan "talloc read_write_all build_assert array_size endian"
+    touch AUTHORS
+    touch ChangeLog
+
+    echo "SUBDIRS = lib/ccan src docs" >> Makefile.am
+
+    aclocal
+    autoheader
+    autoconf
+    automake --add-missing -Wno-portability
+
+    ./configure --prefix=$out
+    '';
+
+  installPhase = ''
+    mkdir -p $out
+    make install
+    '';
+
+  meta = with lib; {
+    description = "Tools for maintaining UEFI signature databases";
+    homepage    = "http://jk.ozlabs.org/docs/sbkeysync-maintaing-uefi-key-databases";
+    maintainers = [ maintainers.tstrobel ];
+    platforms   = [ "x86_64-linux" ]; # Broken on i686
+    license     = licenses.gpl3;
+  };
+}
+