msm:vidc: force constrained baseline profile for H264 BP encoding

Core is returning improper header information for H264 128kbps,
level-1b and baseline profile settings. Forcing the setting to
constrained baseline profile for normal baseline profile as
per the updated interface specification resolves the issue.

Change-Id: Ib106b17be9453cfd80264cc2167dda919893b1e2
CRs-Fixed: 371606
Signed-off-by: Rajeshwar Kurapaty <rkurapat@codeaurora.org>