Fix gpio interrupt enable fail.
Fix gpio interrupt enable fail.

If set both falling and rising to TRUE,
it will be cause bcm4390x_gpio_enable return -EINVAL.
================================================
	if (falling && rising) {
		return -EINVAL;
	}	if (falling && rising) {
		return -EINVAL;
	}
================================================

Change-Id: Id69f410f77157460d9a4186aeae6a75d94848f69
Signed-off-by: Kai Lv <16881f9557d75ca0b4a7b62e460c49d15685a07f@samsung.com>

junmin-kim/TizenRT,jsdosa/TizenRT,pillip8282/TizenRT,an4967/TizenRT,HONGCHAEHEE/TizenRT,Samsung/TizenRT,sunghan-chang/TizenRT,jeongchanKim/TizenRT,davidfather/TizenRT,Samsung/TizenRT,pillip8282/TizenRT,junmin-kim/TizenRT,pillip8282/TizenRT,Samsung/TizenRT,jeongarmy/TizenRT,jsdosa/TizenRT,chanijjani/TizenRT,an4967/TizenRT,JeonginKim/TizenRT,an4967/TizenRT,junmin-kim/TizenRT,sunghan-chang/TizenRT,JeonginKim/TizenRT,an4967/TizenRT,HONGCHAEHEE/TizenRT,jeongchanKim/TizenRT,JeonginKim/TizenRT,jeongarmy/TizenRT,HONGCHAEHEE/TizenRT,JeonginKim/TizenRT,sunghan-chang/TizenRT,pillip8282/TizenRT,chanijjani/TizenRT,jsdosa/TizenRT,jsdosa/TizenRT,JeonginKim/TizenRT,Samsung/TizenRT,jeongarmy/TizenRT,an4967/TizenRT,Samsung/TizenRT,junmin-kim/TizenRT,jeongarmy/TizenRT,jeongarmy/TizenRT,davidfather/TizenRT,an4967/TizenRT,davidfather/TizenRT,davidfather/TizenRT,junmin-kim/TizenRT,HONGCHAEHEE/TizenRT,chanijjani/TizenRT,chanijjani/TizenRT,sunghan-chang/TizenRT,chanijjani/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,Samsung/TizenRT,jeongarmy/TizenRT,sunghan-chang/TizenRT,pillip8282/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,junmin-kim/TizenRT,jeongchanKim/TizenRT,jsdosa/TizenRT,jsdosa/TizenRT,jsdosa/TizenRT,jeongchanKim/TizenRT,HONGCHAEHEE/TizenRT,jeongchanKim/TizenRT,pillip8282/TizenRT,chanijjani/TizenRT,jeongchanKim/TizenRT,davidfather/TizenRT,chanijjani/TizenRT,sunghan-chang/TizenRT,sunghan-chang/TizenRT,davidfather/TizenRT,davidfather/TizenRT,pillip8282/TizenRT,JeonginKim/TizenRT,HONGCHAEHEE/TizenRT,jeongarmy/TizenRT