ARM: at91/dt: add RTT nodes to at91 dtsis

at91sam926x, at91sam9g45 and at91sam9rl SoCs all have at least one RTT
block.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi
index 653e439..7f37b7e 100644
--- a/arch/arm/boot/dts/at91sam9263.dtsi
+++ b/arch/arm/boot/dts/at91sam9263.dtsi
@@ -922,6 +922,21 @@
 				pinctrl-0 = <&pinctrl_can_rx_tx>;
 				clocks = <&can_clk>;
 				clock-names = "can_clk";
+			};
+
+			rtc@fffffd20 {
+				compatible = "atmel,at91sam9260-rtt";
+				reg = <0xfffffd20 0x10>;
+				interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+				clocks = <&slow_xtal>;
+				status = "disabled";
+			};
+
+			rtc@fffffd50 {
+				compatible = "atmel,at91sam9260-rtt";
+				reg = <0xfffffd50 0x10>;
+				interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+				clocks = <&slow_xtal>;
 				status = "disabled";
 			};
 		};