msm: msm_bus: Add configuration clock control in the bus driver

Add support for enabling USB3 master iface clock before setting
the QoS registers. Having this clock disabled causes a crash
on accessing USB3 registers in case a TZ image with XPU
disabled is used.

Change-Id: I5efd42f1afe1df1c7756853881771a2dc3d171b7
CRs-Fixed: 418064
Signed-off-by: Gagan Mac <gmac@codeaurora.org>