USB: OTG: enable BSV/IDGND interrupts irrespective of PHY/PMIC control

8960 OTG driver supports both PHY and PMIC control. In case of PHY
control PHY will generate the async interrupt to bring the HW out of LPM,
upon cable connect followed by BSV/IDGND interrupt based on
micro-A/B cable.

In case of PMIC control which will be used to achieve aggressive power
management,PMIC interrupt will bring the HW out of LPM and HW is expected
to generate the BSV/IDGND after that.
Hence enable the OTG BSV/IDGND interrupt irrespective of PHY/PMIC control.

Remove the PHY control check to set the input variables for BSV/ID while
booting with cable connected.

Change-Id: Id556a6823e43ac805510c30346c5d7f94a8f6f15
Signed-off-by: Anji jonnala <anjir@codeaurora.org>