imx: mxc_gpio: add support for imx7d SoC

* Add mxc_gpio support for imx7d SoC
* Use CONFIG_MX7 to extend mxc gpio driver support for imx7d

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Signed-off-by: Adrian Alonso <aalonso@freescale.com>
diff --git a/arch/arm/include/asm/arch-mx7/gpio.h b/arch/arm/include/asm/arch-mx7/gpio.h
new file mode 100644
index 0000000..b7890c2
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx7/gpio.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ASM_ARCH_MX7_GPIO_H
+#define __ASM_ARCH_MX7_GPIO_H
+
+#include <asm/imx-common/gpio.h>
+
+#endif /* __ASM_ARCH_MX7_GPIO_H */
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index 0c48320..70fe5b6 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -40,16 +40,18 @@
 	[1] = GPIO2_BASE_ADDR,
 	[2] = GPIO3_BASE_ADDR,
 #if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
-		defined(CONFIG_MX53) || defined(CONFIG_MX6)
+		defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
+		defined(CONFIG_MX7)
 	[3] = GPIO4_BASE_ADDR,
 #endif
-#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6)
+#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
+		defined(CONFIG_MX7)
 	[4] = GPIO5_BASE_ADDR,
 #ifndef CONFIG_MX6UL
 	[5] = GPIO6_BASE_ADDR,
 #endif
 #endif
-#if defined(CONFIG_MX53) || defined(CONFIG_MX6)
+#if defined(CONFIG_MX53) || defined(CONFIG_MX6) || defined(CONFIG_MX7)
 #ifndef CONFIG_MX6UL
 	[6] = GPIO7_BASE_ADDR,
 #endif