clk: qcom: Add camera clock driver for SDMMAGPIE

Add support for camera clock controller found on SDMMAGPIE
based devices. This would allow camera device drivers
to probe and control their clocks.

Change-Id: Ib2e4e40352fb71cd34cae7fea047c915ee848ad5
Signed-off-by: Amit Nischal <anischal@codeaurora.org>