Merge "gn2bp: Update args.gn in gen_desc_json" am: a50d3cc46f

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2429635

Change-Id: I0be6e7ba423a9e9ff13e54b3919f14c54d34c974
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>