usb: msm72k_otg: Update OTG status management
usb: msm72k_otg: Allow USB bus overdraw for Legacy OTG

This commit allow to set a new option in kernel config:
USB_MSM_OTG_72K_ALLOW_BUS_OVERDRAW

The option allows USB bus overdraw when using peripherals
attached via OTG on Legacy Qualcomm on-chip USB controller
Update default defconfig
Squashed update of kernel from 3.4.76 to 3.4.77