usb: phy: Enable proper DP DM masks for PHY interrupts

Enable proper DP and DM toggle masks to get PHY wakeup
interrupts on DP/DM state changes in different
bus speeds (FS/HS or LS).
Also make sure that the interrupts are cleared by adding
a delay of 200us to prevent an unwanted interrupt that is
triggered during suspend on peripheral disconnect.


Change-Id: I31b9e50dcc47605fd68b691ed3326136527613ad
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>