msm: camera: Add support for LED flash fast factory boot mode

Create torch-light node for cci based i2c driven led flash device
and provide handle to fast mmi. Also changed the node name to match
the name in fastmmi code.

Change-Id: Iae75312f49c844abbb6c080c1fe6730f197fa936
Signed-off-by: Ravi Kishore Tanuku <rktanuku@codeaurora.org>