msm: camera: Updated the vreg parameters for powerdown.

Used proper VREGs during powering off camera.
Now all the LEDS go off when camera app is closed.

Change-Id: Ice7a103171fdf21afb65ed4b5c733e5d33d3c8b3
Signed-off-by: Rajesh Bondugula <rajeshb@codeaurora.org>