msm: vidc: add all intra cap for bengal

All intra capabilities for bengal is missing.
As a result, usecases which looks to set all
intra by setting zero GOP and zero B-frame count
is failing.

Change-Id: Idf75e6babfe1e2878ce6b0a7e1bb7f5c59bc18ea
Signed-off-by: Vikash Garodia <vgarodia@codeaurora.org>