msm-camera : Update sensor mount angle and position

Update sensor driver to add sensor mount angle and
position as part of media entity flag. This info
is used by upper layers to get the info from
media device entity insted of opening camera
to reduce the launch latency.

CRs-Fixed: 567721
Change-Id: Ifb535ebc7b62368060f90dae97531bc0eeb98e99
Signed-off-by: Katta Santhisindhu <kattas@codeaurora.org>