Camera: Allow out of order ZSL shutter vs regular shutter

HAL ZSL request may be out-of-order compared to normal/reprocess
requests. Allow such case to improve shot lantecy.

Test: Camera CTS, 3P camera app sanity test.
Bug: 120604717
Change-Id: Id994efbe392094cdae694afaa2d159bc9c49d5f0
2 files changed