USB OTG driver maintains the state of VBUS using vbus_is_online flag for pdata based vbus power routine. Hence remove the used vbus_is_online flag here and return the result of VBUS power sequence to update the vbus_is_online flag in OTG driver. Change-Id: I8bea42d5ebc27fab6fc2ae8a0b9fb58bdbaf854a Signed-off-by: Mayank Rana <mrana@codeaurora.org>