gpio/omap: cleanup set_gpio_triggering function

Getting rid of ifdefs within the function by adding register offset intctrl
and associating OMAPXXXX_GPIO_INT_CONTROL in respective SoC specific files.
Also, use wkup_status register consistently instead of referring to wakeup
clear and wakeup set register offsets. Get rid of cpu_is_xxxx checks in
set_gpio_trigger() using irqctrl.

Signed-off-by: Charulatha V <charu@ti.com>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
diff --git a/arch/arm/mach-omap1/gpio16xx.c b/arch/arm/mach-omap1/gpio16xx.c
index 1eb47e2..46bb57a 100644
--- a/arch/arm/mach-omap1/gpio16xx.c
+++ b/arch/arm/mach-omap1/gpio16xx.c
@@ -45,6 +45,7 @@
 	.irqstatus	= OMAP_MPUIO_GPIO_INT,
 	.irqenable	= OMAP_MPUIO_GPIO_MASKIT,
 	.irqenable_inv	= true,
+	.irqctrl	= OMAP_MPUIO_GPIO_INT_EDGE,
 };
 
 static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = {
@@ -90,6 +91,8 @@
 	.set_irqenable	= OMAP1610_GPIO_SET_IRQENABLE1,
 	.clr_irqenable	= OMAP1610_GPIO_CLEAR_IRQENABLE1,
 	.wkup_en	= OMAP1610_GPIO_WAKEUPENABLE,
+	.edgectrl1	= OMAP1610_GPIO_EDGE_CTRL1,
+	.edgectrl2	= OMAP1610_GPIO_EDGE_CTRL2,
 };
 
 static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {