msm: vidc: Set default properties for venus 3.x

For Venus 3.x firmware, driver will set
dynamic buffer mode and continue data transfer
always. Also set actual buffer size and
display buffer hold count on firmware.

Change-Id: I99fb8be931f1950ad68d096b05ece5f67dac4465
Signed-off-by: Arun Menon <avmenon@codeaurora.org>
Signed-off-by: Pushkaraj Patil <ppatil@codeaurora.org>