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/ecl/ecl-1.16.2-libffi-3.3-abi.patch

@@ -0,0 +1,15 @@
+diff --git a/src/c/ffi.d b/src/c/ffi.d
+index 8861303e..8a959c23 100644
+--- a/src/c/ffi.d
++++ b/src/c/ffi.d
+@@ -145,8 +145,8 @@ static struct {
+ #elif defined(X86_WIN64)
+         {@':win64', FFI_WIN64},
+ #elif defined(X86_ANY) || defined(X86) || defined(X86_64)
+-        {@':cdecl', FFI_SYSV},
+-        {@':sysv', FFI_SYSV},
++        {@':cdecl', FFI_UNIX64},
++        {@':sysv', FFI_UNIX64},
+         {@':unix64', FFI_UNIX64},
+ #endif
+ };