msm: camera: cdm: Add support for CAM_CDM_CMD_DMI

Currently only DMI_32 and DMI_64 was supported, add provision
to allow userspace to use DMI_CMD as well.

Change-Id: I766e0ac6eae35f7ab29bcc4e2f8a90651feb8c71
Signed-off-by: Karthik Anantha Ram <kartanan@codeaurora.org>