QCamera2: HAL3: Use monotonic timestamp for pthread_cond_timedwait

Wall time may jump forward/backward. Especially when it jumps forward,
pthread_cond_timedwait may return early with TIMEOUT.

Switch to MONOTONIC time base instead.

Bug: 33110475
Change-Id: I7801c8a0c85dff25ed431c3aec63eecf3dc37b52
7 files changed