ARM: at91: make gpio register base soc independant

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Ryan Mallon <rmallon@gmail.com>
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index 938b34f..11d7297 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -65,7 +65,7 @@
 
 struct at91_gpio_bank {
 	unsigned short id;		/* peripheral ID */
-	unsigned long offset;		/* offset from system peripheral base */
+	unsigned long regbase;		/* offset from system peripheral base */
 	struct clk *clock;		/* associated clock */
 };
 extern void __init at91_gpio_init(struct at91_gpio_bank *, int nr_banks);