usb: phy: qusb2: Enable phy auto-resume

phy auto-resume allows phy to automatically drive bus resume right
after device driving bus resume for at least 1ms due to remote wake up,
before host XHCI driver gets a chance to drive bus resume.

Change-Id: Ifbd2d8212fe5ed1bdad32418300ac615091f0226
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>