mxc_gpio: add support for MX53 processor

This patch add mxc_gpio support for Freescale MX53 processor

Signed-off-by: Jason Liu <r64343@freescale.com>

drivers/gpio/mxc_gpio.c

@@ -24,7 +24,7 @@
 #ifdef CONFIG_MX31
 #include <asm/arch/mx31-regs.h>
 #endif
-#ifdef CONFIG_MX51
+#if defined(CONFIG_MX51) || defined(CONFIG_MX53)
 #include <asm/arch/imx-regs.h>
 #endif
 #include <asm/io.h>
@@ -35,9 +35,14 @@ static unsigned long gpio_ports[] = {
 	[0] = GPIO1_BASE_ADDR,
 	[1] = GPIO2_BASE_ADDR,
 	[2] = GPIO3_BASE_ADDR,
-#ifdef CONFIG_MX51
+#if defined(CONFIG_MX51) || defined(CONFIG_MX53)
 	[3] = GPIO4_BASE_ADDR,
 #endif
+#if defined(CONFIG_MX53)
+	[4] = GPIO5_BASE_ADDR,
+	[5] = GPIO6_BASE_ADDR,
+	[6] = GPIO7_BASE_ADDR,
+#endif
 };
 
 int mxc_gpio_direction(unsigned int gpio, enum mxc_gpio_direction direction)