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/development/compilers/mono/mono4-glibc.patch

@@ -0,0 +1,12 @@
+diff --git a/mono/io-layer/processes.c b/mono/io-layer/processes.c
+index 53c271a4..84bd3252 100644
+--- a/mono/io-layer/processes.c
++++ b/mono/io-layer/processes.c
+@@ -19,6 +19,7 @@
+ #include <errno.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
++#include <sys/sysmacros.h>
+ #include <unistd.h>
+ #ifdef HAVE_SIGNAL_H
+ #include <signal.h>