usb: dwc3-msm: Add dynamic pm_qos, clock and bus voting in host mode

Add dynamic vote for pm_qos, clock and bus during host mode. If data
load is high, raise clock rate and bus bandwidth, decrease pm_qos to
improve USB throughput. If data load is low, decrease clock rate and
bus bandwidth, increase pm_qos to save power consumption.

Change-Id: I47ca812d6970cfe9ff12ff173317f2335543fbcf
CRs-Fixed: 1059232
Signed-off-by: Ziqi Chen <ziqic@codeaurora.org>