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/tools/buf/skip_test_requiring_network.patch

@@ -0,0 +1,15 @@
+diff --git a/private/bufpkg/buftesting/buftesting.go b/private/bufpkg/buftesting/buftesting.go
+index 82b3ec4..ef8263a 100644
+--- a/private/bufpkg/buftesting/buftesting.go
++++ b/private/bufpkg/buftesting/buftesting.go
+@@ -99,6 +99,10 @@ func RunActualProtoc(
+ 
+ // GetGoogleapisDirPath gets the path to a clone of googleapis.
+ func GetGoogleapisDirPath(t *testing.T, buftestingDirPath string) string {
++	// Requires network access, which is not available during
++	// the nixpkgs sandboxed build
++	t.Skip()
++
+ 	googleapisDirPath := filepath.Join(buftestingDirPath, testGoogleapisDirPath)
+ 	require.NoError(
+ 		t,