Camera3: Trigger IDs now received from framework

Before: Trigger IDs would increment internally in the HAL

After: Trigger IDs are read from the framework when the accompanying trigger
       is explicitly set in the request.

Rationale:
Since the framework tracks its trigger completion based on the IDs it sends to
the HAL, we need the HAL to use the framework IDs instead of generating its own.

Change-Id: I0a4343c1f12b62c9432478a3bb8e0921a2da93c2
1 file changed