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/os-specific/linux/numad/numad-linker-flags.patch

@@ -0,0 +1,33 @@
+From 9eb3cc5c51d846c8c8b750a4eb55545d7b5fea6c Mon Sep 17 00:00:00 2001
+From: Mike Frysinger <vapier@gentoo.org>
+Date: Wed, 23 Apr 2014 15:41:26 -0400
+Subject: [PATCH] use LDLIBS for linker flags
+
+When you put -lfoo into the dependency line of make, it forces it to
+search /lib and /usr/lib for files to link against.  This can cause
+problems when trying to cross-compile or build for different ABIs.
+Use the standard LDLIBS variable instead.
+
+URL: https://bugs.gentoo.org/505760
+Reported-by: Georgi Georgiev <chutzimir@gmail.com>
+Signed-off-by: Mike Frysinger <vapier@gentoo.org>
+---
+ Makefile | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index f3838b4..f2e9a6e 100644
+--- a/Makefile
++++ b/Makefile
+@@ -31,7 +31,8 @@ docdir := ${prefix}/share/doc
+ 
+ all: numad
+ 
+-numad: numad.o -lpthread
++LDLIBS := -lpthread
++numad: numad.o
+ 
+ AR ?= ar
+ RANLIB ?= ranlib
+-- 
+1.9.2