This patch changes all the static gpio irq number assigning with
IOMUX_TO_IRQ() to run-time assigning with gpio_to_irq call, and
in turn eliminates the macro IOMUX_TO_IRQ().
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Acked-by: NDong Aisheng <dong.aisheng@linaro.org>