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/gcc/ppc-musl.patch

@@ -0,0 +1,18 @@
+diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
+index cbee89140dd..e1f26b0a096 100644
+--- a/gcc/config/rs6000/sysv4.h
++++ b/gcc/config/rs6000/sysv4.h
+@@ -996,13 +996,7 @@ ncrtn.o%s"
+     { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
+       GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
+ 
+-#ifdef LOCAL_INCLUDE_DIR
+-#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
+-    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
+-    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
+-#else
+ #define INCLUDE_DEFAULTS_MUSL_LOCAL
+-#endif
+ 
+ #ifdef PREFIX_INCLUDE_DIR
+ #define INCLUDE_DEFAULTS_MUSL_PREFIX			\