usb: phy: qusb: Do not power down PHY if EUD is enabled

If HS PHY is powered down as part of spoof disconnect,
it will leads to enumeration failure of EUD on host PC.
Hence do not power down the PHY as part of suspend
when EUD is enabled.

Change-Id: Iec76b9081f59cb18cd876f59e94081297fce5d2b
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>