Invalidate output buffers explcitly once, during registration. This ensures any pending CPU writes (eg. memset 0 after allocation) are not flushed _after_the hardware has written bitstream. b/ 11149679 Change-Id: I958466011e7d96c7b5e2691403c8386309997429 Signed-off-by: Praveen Chavan <pchavan@codeaurora.org>