msm: camera: Disable gdsc_vfe regulator during cpp release

gdsc_vfe regulator is not disabled during cpp release. This causes
power drain. Disable gdsc_vfe regulator during cpp release which
is called when camera is closed.

Change-Id: I8ca80e7ee322b13196976802a1de8e6879638199
Signed-off-by: Sreesudhan Ramakrish Ramkumar <srramku@codeaurora.org>