ARM: at91: do not pin mux the UARTs in init_early

There is no need to pinmux the UART so early in the kernel.
Move it to the board init.

This will also allow to finally move the gpio driver to platform device/driver.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/mach-at91/board-csb337.c b/arch/arm/mach-at91/board-csb337.c
index d984435..ad7f9f0 100644
--- a/arch/arm/mach-at91/board-csb337.c
+++ b/arch/arm/mach-at91/board-csb337.c
@@ -50,9 +50,6 @@
 
 	/* Setup the LEDs */
 	at91_init_leds(AT91_PIN_PB0, AT91_PIN_PB1);
-
-	/* DBGU on ttyS0 */
-	at91_register_uart(0, 0, 0);
 }
 
 static struct macb_platform_data __initdata csb337_eth_data = {
@@ -226,6 +223,8 @@
 static void __init csb337_board_init(void)
 {
 	/* Serial */
+	/* DBGU on ttyS0 */
+	at91_register_uart(0, 0, 0);
 	at91_add_device_serial();
 	/* Ethernet */
 	at91_add_device_eth(&csb337_eth_data);