Merge "Audio HAL: Allow setters to not be implemented am: 5b21eaa608  -s ours am: ec65974f60  -s ours" into oc-mr1-dev am: ef9d405040  -s ours
am: 5ddaa92810  -s ours

Change-Id: I5039a7f3e220881d75c875227d2f9cadb915614e