Merge "omx: validate only standard OMX roles" into sc-dev am: af592fb1 am: b08320b0 am: c6dc6fc2 am: df4523eb

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/15528285

Change-Id: Ib5e679ad6089e13360e397fed5657e4b538bbf26