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/misc/screensavers/vlock/default.nix

@@ -0,0 +1,30 @@
+{ lib, stdenv, fetchurl, pam }:
+
+stdenv.mkDerivation rec {
+  pname = "vlock";
+  version = "2.2.2";
+
+  src = fetchurl {
+    url = "mirror://debian/pool/main/v/vlock/vlock_${version}.orig.tar.gz";
+    sha256 = "1b9gv7hmlb8swda5bn40lp1yki8b8wv29vdnhcjqfl6ir98551za";
+  };
+
+  prePatch = ''
+    sed -i -e '/INSTALL/ {
+      s/-[og] [^ ]*//g; s/4711/755/
+    }' Makefile modules/Makefile
+  '';
+
+  patches = [ ./eintr.patch ];
+
+  configureFlags = [ "VLOCK_GROUP=root" "ROOT_GROUP=root" ];
+
+  buildInputs = [ pam ];
+
+  meta = with lib; {
+    description = "Virtual console locking program";
+    license = licenses.gpl2;
+    maintainers = [ ];
+    platforms = platforms.linux;
+  };
+}

pkgs/misc/screensavers/vlock/eintr.patch

@@ -0,0 +1,34 @@
+In systemd I have seen this error, using it as a service:
+
+vlock-start[14567]: vlock-new: could not activate new terminal: Interrupted system call
+
+I think this should fix that.
+
+Also on github: https://github.com/viric/vlock/commit/781a26087f83c7247601b6f82f784cca9266694e
+
+diff --git a/modules/new.c b/modules/new.c
+index e9b15fb..7aed640 100644
+--- a/modules/new.c
++++ b/modules/new.c
+@@ -103,9 +103,19 @@ static char *get_console_name(int n)
+  * file descriptor. */
+ static int activate_console(int consfd, int vtno)
+ {
+-  int c = ioctl(consfd, VT_ACTIVATE, vtno);
++  int c;
++  do {
++    c = ioctl(consfd, VT_ACTIVATE, vtno);
++  } while(c != 0 && errno == EINTR);
+ 
+-  return c < 0 ? c : ioctl(consfd, VT_WAITACTIVE, vtno);
++  if (c < 0)
++      return c;
++
++  do {
++    c = ioctl(consfd, VT_WAITACTIVE, vtno);
++  } while(c != 0 && errno == EINTR);
++
++  return c;
+ }
+ 
+ struct new_console_context {