msm: camera: sensor: Update actuator power up state

When power up the actuator, set the current actuator
state as power up. So when the time of power down,
actuator can be actually turned off.
Delete vcm_enable, pwd that is not referred any more.

Change-Id: Ifa1d4dd6a8833d662683e82986877d687bdfa09b
Signed-off-by: Kyong Hwa Bae <kbae@codeaurora.org>