arm: at91: dt: at91sam9 add pinctrl support

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index e228d73..523daa9 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -449,7 +449,8 @@
 	/* Register the processor-specific clocks */
 	at91_boot_soc.register_clocks();
 
-	at91_boot_soc.init();
+	if (at91_boot_soc.init)
+		at91_boot_soc.init();
 }
 #endif