dwc3: Handle USB spoof disconnect when EUD is enabled

Due to dpdm regulator is not being used on newer platform as
ADSP firmware takes care of charger detection, there is no
way to detect USB cable disconnect vs USB spoof disconnect
when EUD is enabled. This change identifies USB spoof
disconnect and provides spoof disconnect related information
to USB PHY driver to avoid turning off PHY clocks and regulators.

Change-Id: I8f6b953e7196378b9786fe268a08cc1a0e2620d3
Signed-off-by: Mayank Rana <mrana@codeaurora.org>