Camera: add support for cm camera

camera: Add support for sending raw commands

 * Certain camera drivers need magic commands to select special modes
   such as ZSL or HDR. Add support for sending raw commands from
   applications.

Change-Id: I512a765c7a67ffd2877e465cf6493ffc2b3b54ac

Camera: add ISO mode support

Change-Id: Ied2075f950269990d836fc768b2c6c36088d494f

Camera: add additional ISO modes (2/2)

Change-Id: I3460c3de4cbef467430673146a9ddb2fdc8f5032

Camera : Powerkey shutter (1/2)

Allows user to take use power key to take pictures/videos

Change-Id: I85a1e1761199f4604672be42a3a5005227f5451a