usb: phy-msm-ssusb-qmp: Perform USB only reset in USB+DP mode

When USB3 controller stops responding to stop endpoint
command driver performs global phy reset to recover from
error state. During this USB host mode recovery is performed
and global phy reset is done but DP driver is not notified
of this reset which results in unclocked access of DP link
registers. Fix this by replacing phy global reset with USB
only reset to not affect DP PHY when USB is reset in DP+USB
concurrent mode.

Change-Id: I2acde04c99b84293644fdefdceee4bd00a964e7f
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>