ARM: dts: msm: Add GCC clock node for LITO

Update the gcc node to use the clock driver and also update the gcc GDSCs
to use GDSC regulator driver. While at it fix few fixed clocks.

Change-Id: I310abbb49c77eb98dd4f15bd1731e2aa37810328
Signed-off-by: Taniya Das <tdas@codeaurora.org>