Update the HCI vendor command A2dp HW Offload

- The Start (0x0) and Stop (0x1) sub-opcodes are deprecated
  in favor of Start (0x2) and Stop (0x3) which take different
  parameters.

- Identify when the offload path goes through the provider
  info, and use the new sub-opcodes accordingly.

Bug: 308958546
Bug: 308686081
Test: m com.android.btservices
Change-Id: Id8df92b3ad9307ad2a8cc5e60c582108fbc2a37e