OMX VTS: Use GetComponentRole from OMXUtils

Test: atest VtsHalMediaOmxV1_0TargetMasterTest

Bug: 159410244
Change-Id: Iba2a7259ddc5fc634b22d8c5954178dede6b71d5
Merged-In: Iba2a7259ddc5fc634b22d8c5954178dede6b71d5
2 files changed