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/darwin/cctools/ld-rpath-nonfinal.patch

@@ -0,0 +1,29 @@
+diff --git a/cctools/ld64/src/ld/Options.cpp b/cctools/ld64/src/ld/Options.cpp
+index e4b37ec..4189ebc 100644
+--- a/cctools/ld64/src/ld/Options.cpp
++++ b/cctools/ld64/src/ld/Options.cpp
+@@ -5800,24 +5800,6 @@ void Options::checkIllegalOptionCombinations()
+ 	if ( fDeadStrip && (fOutputKind == Options::kObjectFile) )
+ 		throw "-r and -dead_strip cannot be used together";
+ 
+-	// can't use -rpath unless targeting 10.5 or later
+-	if ( fRPaths.size() > 0 ) {
+-		if ( !platforms().minOS(ld::version2008) )
+-			throw "-rpath can only be used when targeting Mac OS X 10.5 or later";
+-		switch ( fOutputKind ) {
+-			case Options::kDynamicExecutable:
+-			case Options::kDynamicLibrary:
+-			case Options::kDynamicBundle:
+-				break;
+-			case Options::kStaticExecutable:
+-			case Options::kObjectFile:
+-			case Options::kDyld:
+-			case Options::kPreload:
+-			case Options::kKextBundle:
+-				throw "-rpath can only be used when creating a dynamic final linked image";
+-		}
+-	}
+-	
+ 	if ( fPositionIndependentExecutable ) {
+ 		switch ( fOutputKind ) {
+ 			case Options::kDynamicExecutable: