usb/penwell_otg: disable PHY interrupt VBUSVALID/ID when connect to Host

usb/penwell_otg: disable PHY interrupt VBUSVALID/ID when connect to Host

BZ: 22901

This is a workaround patch in penwell_otg driver, disable PHY interrupt
VBUSVALID and ID when connected to a USB Host to avoid unexpected RxCMD
from PHY, this is for MFLD only.

Change-Id: I6d80a2b5d3d5b91a7a49685b0d1fb0afb7b1df41
Signed-off-by: Wu, Hao <hao.wu@intel.com>
Reviewed-on: http://android.intel.com:8080/34495
Reviewed-by: Tang, Richard <richard.tang@intel.com>
Reviewed-by: Meng, Zhe <zhe.meng@intel.com>
Tested-by: Meng, Zhe <zhe.meng@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>