QCamera2/HAL3: Handle releaseFrameData() correctly for batch mode

mDataQ.flush() calls releaseFrameData() with any pending buffers.
In case of batch mode, these are batch container buffers that
should be added to the empty batch buffer list.

Bug: 23360060

Change-Id: Ice2527b50ac9005055bd8f92312a111941855fe5
1 file changed