ARM: dts: msm: Add clock node entry for LPASS hw vote

Add support for LPASS core hw voting as clock node and
expose clock ops for clients like LPI pinctrl driver
to vote. LPI driver vote using this node before accessing
LPASS TLMM registers.

Change-Id: I5eb77e450c7fbe3c3d5a681edbe50a65d6dfdb2e
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>