avr32: Fix GPIO initcall breakage

Add essential system devices, including GPIO controllers, automatically
at core_initcall time. This ensures that the devices are there when the
PIO driver gets initialized at postcore_initcall, fixing a bug exposed
by commit d6634db8 "avr32: Use
platform_driver_probe for pio platform driver".
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

arch/avr32/boards/atngw100/setup.c

@@ -172,8 +172,6 @@ static int __init atngw100_init(void)
 	 * reserve any pins for it.
 	 */
 
-	at32_add_system_devices();
-
 	at32_add_device_usart(0);
 
 	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));

arch/avr32/boards/atstk1000/atstk1002.c

@@ -305,8 +305,6 @@ static int __init atstk1002_init(void)
 	at32_reserve_pin(GPIO_PIN_PE(15));	/* DATA[31]	*/
 	at32_reserve_pin(GPIO_PIN_PE(26));	/* SDCS		*/
 
-	at32_add_system_devices();
-
 #ifdef CONFIG_BOARD_ATSTK1006
 	smc_set_timing(&nand_config, &nand_timing);
 	smc_set_configuration(3, &nand_config);

arch/avr32/boards/atstk1000/atstk1003.c

@@ -149,8 +149,6 @@ static int __init atstk1003_init(void)
 	at32_reserve_pin(GPIO_PIN_PE(15));	/* DATA[31]	*/
 	at32_reserve_pin(GPIO_PIN_PE(26));	/* SDCS		*/
 
-	at32_add_system_devices();
-
 #ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
 	at32_add_device_usart(1);
 #else

arch/avr32/boards/atstk1000/atstk1004.c

@@ -132,8 +132,6 @@ void __init setup_board(void)
 
 static int __init atstk1004_init(void)
 {
-	at32_add_system_devices();
-
 #ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
 	at32_add_device_usart(1);
 #else

arch/avr32/mach-at32ap/at32ap700x.c

@@ -813,7 +813,7 @@ static struct resource pio4_resource[] = {
 DEFINE_DEV(pio, 4);
 DEV_CLK(mck, pio4, pba, 14);
 
-void __init at32_add_system_devices(void)
+static int __init system_device_init(void)
 {
 	platform_device_register(&at32_pm0_device);
 	platform_device_register(&at32_intc0_device);
@@ -832,7 +832,10 @@ void __init at32_add_system_devices(void)
 	platform_device_register(&pio2_device);
 	platform_device_register(&pio3_device);
 	platform_device_register(&pio4_device);
+
+	return 0;
 }
+core_initcall(system_device_init);
 
 /* --------------------------------------------------------------------
  *  PSIF

arch/avr32/mach-at32ap/include/mach/board.h

@@ -14,8 +14,14 @@
  */
 extern unsigned long at32_board_osc_rates[];
   
-/* Add basic devices: system manager, interrupt controller, portmuxes, etc. */
-void at32_add_system_devices(void);
+/*
+ * This used to add essential system devices, but this is now done
+ * automatically. Please don't use it in new board code.
+ */
+static inline void __deprecated at32_add_system_devices(void)
+{
+
+}
 
 #define ATMEL_MAX_UART	4
 extern struct platform_device *atmel_default_console_device;