at91: Add driver-model GPIO devices for AT91SAM9G45

Add these definitions so that GPIOs can be used with driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Tested-on: smartweb, corvus, taurus, axm
Tested-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>

arch/arm/mach-at91/arm926ejs/at91sam9m10g45_devices.c

@@ -7,6 +7,7 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <asm/arch/at91_common.h>
 #include <asm/arch/clk.h>
 #include <asm/arch/gpio.h>
@@ -165,3 +166,20 @@ void at91_mci_hw_init(void)
 	at91_periph_clk_enable(ATMEL_ID_MCI0);
 }
 #endif
+
+/* Platform data for the GPIOs */
+static const struct at91_port_platdata at91sam9260_plat[] = {
+	{ ATMEL_BASE_PIOA, "PA" },
+	{ ATMEL_BASE_PIOB, "PB" },
+	{ ATMEL_BASE_PIOC, "PC" },
+	{ ATMEL_BASE_PIOD, "PD" },
+	{ ATMEL_BASE_PIOE, "PE" },
+};
+
+U_BOOT_DEVICES(at91sam9260_gpios) = {
+	{ "gpio_at91", &at91sam9260_plat[0] },
+	{ "gpio_at91", &at91sam9260_plat[1] },
+	{ "gpio_at91", &at91sam9260_plat[2] },
+	{ "gpio_at91", &at91sam9260_plat[3] },
+	{ "gpio_at91", &at91sam9260_plat[4] },
+};