USB: dwc3-msm: 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.

CRs-Fixed: 451298
Change-Id: I8041a76ed14c8aff4cd0baa7db0a27b184e3626d
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
2 files changed