hal: Query A2DP sink latency from bthost_ipc

Enable support for delay report feature.
Obtain sink latency from bthost_ipc which
queries it from BT stack for the connected
sink device.

Test: BT pcm play music, check latency in audioflinger dumpsys
Bug: 111812274
Change-Id: Iaec851de7d4e3ec7a45de2b6a5f73f5e3bd851f8