linux-wandboard

MLK-13570-3 usb: chipidea: core: change extcon usage for imx_4.1.y

At v4.1 kernel, we can't get cable type at notifier, but at
extcon-usb-gpio.c notifies both VBUS and ID event, we had to
do special handling for ID event, and omit VBUS event. Current
implementation only supports ID extcon event.

If wakeup event occurs by extcon, it needs to call ci_irq again since the
first ci_irq calling at extcon notifier only wakes up controller, but
do noop for event handling.

Signed-off-by: Peter Chen <peter.chen@nxp.com>