This change adds the ability of the msm_otg to go to LPM when USB cable is connected and bus is suspended. This ability is enabled by a board file parameter. The msm_otg is notified about SUSPEND/RESUME events via the UDC layer. New event for RESUME was defined for that. Change-Id: Ic508f1898cc3b57ab76eccd379bea38ed363570b Signed-off-by: Amit Blay <ablay@codeaurora.org>