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/applications/graphics/graphicsmagick/disable-popen.patch

@@ -0,0 +1,12 @@
+http://permalink.gmane.org/gmane.comp.security.oss.general/19669
+
+--- a/magick/blob.c Sat Nov 07 14:49:16 2015 -0600
++++ b/magick/blob.c Sun May 29 14:12:57 2016 -0500
+@@ -68,6 +68,7 @@
+ */
+ #define DefaultBlobQuantum  65541
+ 
++#undef HAVE_POPEN
+ 
+ /*
+   Enum declarations.