gpio/omap: consolidate IRQ status handling, remove #ifdefs

Cleanup IRQ status handling by passing IRQ status register offsets
via platform data.

Cleans up clearing of GPIO IRQ status and GPIO ISR handler.

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 4ff6ff3..3e52b7f 100644
--- a/arch/arm/mach-omap1/gpio16xx.c
+++ b/arch/arm/mach-omap1/gpio16xx.c
@@ -41,6 +41,7 @@
 	.direction	= OMAP_MPUIO_IO_CNTL,
 	.datain		= OMAP_MPUIO_INPUT_LATCH,
 	.dataout	= OMAP_MPUIO_OUTPUT,
+	.irqstatus	= OMAP_MPUIO_GPIO_INT,
 };
 
 static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = {
@@ -80,6 +81,7 @@
 	.clr_dataout	= OMAP1610_GPIO_CLEAR_DATAOUT,
 	.datain		= OMAP1610_GPIO_DATAIN,
 	.dataout	= OMAP1610_GPIO_DATAOUT,
+	.irqstatus	= OMAP1610_GPIO_IRQSTATUS1,
 };
 
 static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {