usb: phy: qusb2: Do not perform phy reset if EUD is enabled

If EUD is enabled and phy reset is performed due to
spoof connect, EUD enumeration fails. Fix this issue
by reading EUD enable register before phy init. Check
the status in and qusb_phy_dpdm_regulator_enable()
which also performs phy reset.

Change-Id: Ia2321d8608842036b9048767d72b485340b2c6ef
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>