msm: vidc: modify bus table governor to add ubwc bus vectors

Modify the existing bus table governor to add ubwc bus vectors
to reduce bus bandwidth when client sets ubwc color format
on video sessions.

Change-Id: I3d90f5d4737951c628d048946f264625b97c7e55
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>