Camera3: Selectively set buffer timestamp depends on consumer

Certain consumers such as Hardware Composer and AudioSource
use MONOTONIC timestamp, which causes time misalignment if
camera timestamp is in BOOTTIME.

Do not set buffer time stamp for such streams and let
BufferQueue handle it.

Bug: 22214409
Bug: 26762232
Change-Id: Id1c4b85a181e39827e8f27949a199165bbd445f9