ARM: at91/dt: at91sam9rlek: add RTC

Add RTC support to the at91sam9rlek.
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/at91sam9rlek.dts

@@ -184,6 +184,10 @@
 			watchdog@fffffd40 {
 				status = "okay";
 			};
+
+			rtc@fffffe00 {
+				status = "okay";
+			};
 		};
 	};