AVRCP: Store and remove absolute volume support and volume stored

1. Store abs volume support when remote will update in RC feature.
2. getVolume will return default volume if volume is not stored.
3. Remove stored volume and abs volume support when bond state changed.

CRs-Fixed: 2519504
Change-Id: Ib2724f6be7225070769ffde947e60fc8f81b4d58
1 file changed