Encoding: Encoding reuses aux_batchbuffer instead of allocate new buffer
Encoding: Encoding reuses aux_batchbuffer instead of allocate new buffer

Signed-off-by: Zhao Yakui <21bae65ecea50a19bd9d0fef489914760189fd5b@intel.com>
(cherry picked from commit 79f2bd8d76392331a3033ae4b8dc8edb3642b90f)

01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver