Move the type to a common sepolicy so it can be shared.
avc: denied { find } for pid=6493 uid=10256 name=vendor.google.radio_ext.IRadioExt/default scontext=u:r:grilservice_app:s0:c0,c257,c512,c768 tcontext=u:object_r:default_android_service:s0 tclass=service_manager permissive=0
NO_AVC_EVIDENCE_CHECK=default_android_service not supported
Bug: 365099058
Test: manual
Flag: EXEMPT mk file
Change-Id: I9c2471792c2a423e19f1472bd7923a5284f9127e
Note: This is copy of the reverted commit
cbc4b64bd1 (ag/24799507) plus the fix to
the problem that caused the revert which is to mark the radio_ext
service as optional in the compatibility matrix.
Bug: 285459428
Test: manually verified dumpsys and logs that service starts without
errors
Change-Id: Ibcd427c501633a95e74e392837b41b0ef513a4a8