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/go/creds-test.patch

@@ -0,0 +1,13 @@
+--- source.org/src/syscall/creds_test.go	1970-01-01 01:00:01.000000000 +0100
++++ source/src/syscall/creds_test.go	2018-02-22 10:43:47.223615358 +0000
+@@ -76,8 +76,8 @@
+ 			if sys, ok := err.(*os.SyscallError); ok {
+ 				err = sys.Err
+ 			}
+-			if err != syscall.EPERM {
+-				t.Fatalf("WriteMsgUnix failed with %v, want EPERM", err)
++			if err != syscall.EPERM && err != syscall.EINVAL {
++				t.Fatalf("WriteMsgUnix failed with %v, want EPERM or EINVAL", err)
+ 			}
+ 		}
+