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/applications/networking/browsers/chromium/patches/widevine-79.patch

@@ -0,0 +1,13 @@
+diff --git a/third_party/widevine/cdm/BUILD.gn b/third_party/widevine/cdm/BUILD.gn
+index ed0e2f5208b..5b431a030d5 100644
+--- a/third_party/widevine/cdm/BUILD.gn
++++ b/third_party/widevine/cdm/BUILD.gn
+@@ -14,7 +14,7 @@ buildflag_header("buildflags") {
+ 
+   flags = [
+     "ENABLE_WIDEVINE=$enable_widevine",
+-    "BUNDLE_WIDEVINE_CDM=$bundle_widevine_cdm",
++    "BUNDLE_WIDEVINE_CDM=true",
+     "ENABLE_WIDEVINE_CDM_COMPONENT=$enable_widevine_cdm_component",
+   ]
+ }