ARM: pxa: move PXA_GPIO_TO_IRQ macro

Since PXA_GPIO_TO_IRQ() & MMP_GPIO_TO_IRQ() macro are depended on
arch code, move them from gpio driver to platform driver instead.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/mach-mmp/ttc_dkb.c

@@ -17,6 +17,7 @@
 #include <linux/interrupt.h>
 #include <linux/i2c/pca953x.h>
 #include <linux/gpio.h>
+#include <linux/gpio-pxa.h>
 #include <linux/mfd/88pm860x.h>
 #include <linux/platform_data/mv_usb.h>
 #include <linux/spi/spi.h>
@@ -75,6 +76,10 @@ static unsigned long ttc_dkb_pin_config[] __initdata = {
 	DF_RDY0_DF_RDY0,
 };
 
+static struct pxa_gpio_platform_data pxa910_gpio_pdata = {
+	.irq_base	= MMP_GPIO_TO_IRQ(0),
+};
+
 static struct mtd_partition ttc_dkb_onenand_partitions[] = {
 	{
 		.name		= "bootloader",
@@ -284,6 +289,8 @@ static void __init ttc_dkb_init(void)
 
 	/* off-chip devices */
 	pxa910_add_twsi(0, NULL, ARRAY_AND_SIZE(ttc_dkb_i2c_info));
+	platform_device_add_data(&pxa910_device_gpio, &pxa910_gpio_pdata,
+				 sizeof(struct pxa_gpio_platform_data));
 	platform_add_devices(ARRAY_AND_SIZE(ttc_dkb_devices));
 
 #ifdef CONFIG_USB_MV_UDC