video: msm: Increase video encoding output buffer size

When bistream buffer size is half of YUV buffer size, video core
may be put into a bad state where output buffers are not returned
back to user space. Increasing the output buffer size solves the issue.

Change-Id: Ide94e5ef039a0a38e91464acf60534468888de18
Signed-off-by: Shuzhen Wang <shuzhenw@codeaurora.org>

Conflicts:

	drivers/video/msm/vidc/1080p/ddl/vcd_ddl_properties.c