usb: phy: qmp: Select usb3 phy mode during PHY reset

commit a3e98f01 ("usb: phy: qmp: Select usb3 phy mode before
initializing PHY") moved the USB/DP mode selection to just prior
to performing PHY initialization. This resolved initialization
failure however it still may fail to result in SuperSpeed
enumeration on when first switching from DP back to USB3 mode.
According to HW documentation the correct place to perform the
mode switch is while the PHY is under reset, so move this step
to msm_ssphy_qmp_reset().

Change-Id: Ia540b3793440e1d203b79cf129a9e80ad2b0e3e9
Signed-off-by: Jack Pham <jackp@codeaurora.org>