ARM: ux500: Enable PL011 AMBA UART Controller for Device Tree

Enables the 3 UARTs found on a u8500 using DT.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts
index 34bfd79..359c6d6 100644
--- a/arch/arm/boot/dts/snowball.dts
+++ b/arch/arm/boot/dts/snowball.dts
@@ -96,6 +96,18 @@
 			status = "enabled";
 		};
 
+		uart@80120000 {
+			status = "okay";
+		};
+
+		uart@80121000 {
+			status = "okay";
+		};
+
+		uart@80007000 {
+			status = "okay";
+		};
+
 		i2c@80004000 {
 			tc3589x@42 {
 				//compatible = "tc3589x";