ARM: 7033/1: mach-u300: break out GPIO driver specifics

The <mach/gpio.h> file is included from upper directories
and deal with generic GPIO and gpiolib stuff. Break out the
platform and driver specific defines and functions into its own
header file.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/gpio/gpio-u300.c b/drivers/gpio/gpio-u300.c
index 53e8255..92f2b8c 100644
--- a/drivers/gpio/gpio-u300.c
+++ b/drivers/gpio/gpio-u300.c
@@ -21,6 +21,7 @@
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
+#include <mach/gpio-u300.h>
 
 /* Reference to GPIO block clock */
 static struct clk *clk;