Merge "omx: validate only standard OMX roles" into sc-dev am: af592fb124 am: aae88ba179 am: 9ac48cecef am: 76aa06c1f5

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

Change-Id: Id5be3a09961dc32f95b38b1f7b044bc3a00ebce5