QCamera2/HAL3: Clear mFreeBufferList when buffers are deallocated

When flush is issued, picChannel stop (and start) is called.
Stop=>stream_off=>putStreamBufs deallocates mYuvMemory and
hence corresponding freeBufferList should also be cleared

b/24210489

Change-Id: Ie9f93d2fdea03e0e20a48519fd519207a1dd6b40
1 file changed