ARM: gpio: convert includes of mach/gpio.h and asm/gpio.h to linux/gpio.h

Convert arch/arm includes of mach/gpio.h and asm/gpio.h to linux/gpio.h
before we start consolidating the individual platform implementations
of the gpio header files.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-orion5x/dns323-setup.c b/arch/arm/mach-orion5x/dns323-setup.c
index a6eddae..64e68fa 100644
--- a/arch/arm/mach-orion5x/dns323-setup.c
+++ b/arch/arm/mach-orion5x/dns323-setup.c
@@ -13,7 +13,7 @@
  * License, or (at your option) any later version.
  *
  */
-
+#include <linux/gpio.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/delay.h>
@@ -30,7 +30,6 @@
 #include <linux/phy.h>
 #include <linux/marvell_phy.h>
 #include <asm/mach-types.h>
-#include <asm/gpio.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/pci.h>
 #include <mach/orion5x.h>