QCamera2/HAL3: Allow pproc and jpeg operations to be parallelized

In case of framework reprocessing, reprocess source buffer is
returned to fwk as soon as pproc operation is completed even though jpeg
encoding is still pending. Meanwhile, framework could request for
another reprocess request. Allow one extra buffer to be allocated
for reprocessing output to accomodate this.

Bug: 24141397
Bug: 24139245

Change-Id: I23bd163c56cacd096a4173d30c760298c41b822b
1 file changed