msm: vidc: Update adaptive b caps for lagoon

Update max-b-frames-per-sec from 1080p@30
to 1080p@60 as per latest recommendations.

Change-Id: Ib82b44f43fae96c0ffa54068453f9c7564e5b986
Signed-off-by: Priyanka Gujjula <pgujjula@codeaurora.org>