msm: camera: Add top gdscr for CSID and CCI clocks

Add gdscr regulator handle get and enable before enabling
of CCI and CSID clocks and disable the same after the clock disable.

Change-Id: Ic8a0f167f31c3ac499cfe728ad4d2b1ef1297143
Signed-off-by: Viswanadha Raju Thotakura <viswanad@codeaurora.org>