msm: clock-8610: Add USB device name entry with sleep and XO clock

USB Otg driver is required to vote for sleep clock and XO clock for
USB PHY functionality. Add USB Otg device name with XO clock and
sleep clock entries to allow USB driver to get handle for the same
and allow voting for it.

CRs-Fixed: 518393
Change-Id: I470aa4abbb319a1b90e485c7b6dc567382dce282
Signed-off-by: Mayank Rana <mrana@codeaurora.org>