clk: msm: Add cpu clock driver for SDM632

Add support for cpu clock driver to control cpu
clusters c0/c1 and cci clocks.

Change-Id: I9cdb98112262246a88cc0cf3c169c720d044494d
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Amit Nischal <anischal@codeaurora.org>