USB: msm_otg: Migrate to clock apis for XO voting

Use the clock APIs instead of the msm_xo APIs to vote on CXO.
This removes one more msm specific api from this driver and will
allow us to move XO control into the rpm clock driver. If clock
APIs fail, fallback on msm specific apis to vote for CXO.

Change-Id: I6520948b9fa0ed233b235d0fd9f828ad02bc2ae2
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
2 files changed