msm: vidc: Reduced compressed buffer size for resolutions above 4k

Compressed buffer sizes are allocated based on firmware
resolution capability. For 8k resolutions this size is very large
and hence capped to 1/4th of 8k yuv size.

CRs-Fixed: 2212215
Change-Id: Iae2fcec9b55328ef0ef53d5cedb8d1c0c2c499bb
Signed-off-by: Chinmay Sawarkar <chinmays@codeaurora.org>