ARM: at91: gpio make struct at91_gpio_bank an initdata

this will simplify the switch to the DT and later to the platform_device

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c
index 943da210..3f6c6a1 100644
--- a/arch/arm/mach-at91/at91sam9260.c
+++ b/arch/arm/mach-at91/at91sam9260.c
@@ -274,7 +274,7 @@
  *  GPIO
  * -------------------------------------------------------------------- */
 
-static struct at91_gpio_bank at91sam9260_gpio[] = {
+static struct at91_gpio_bank at91sam9260_gpio[] __initdata = {
 	{
 		.id		= AT91SAM9260_ID_PIOA,
 		.regbase	= AT91SAM9260_BASE_PIOA,