ARM: dts: at91: Use the generic "rtc" node name for the rtt IPs

As the DT specification recommends, the node names should be of a
generic nature. Thus, the most appropriate generic node name for
the at91 rtt IPs is the "rtc" node name.

Signed-off-by: Sergiu Moga <sergiu.moga@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/all/20220304161159.147784-3-sergiu.moga@microchip.com
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
diff --git a/arch/arm/boot/dts/sam9x60.dtsi b/arch/arm/boot/dts/sam9x60.dtsi
index 998629a..c328b67 100644
--- a/arch/arm/boot/dts/sam9x60.dtsi
+++ b/arch/arm/boot/dts/sam9x60.dtsi
@@ -684,7 +684,7 @@
 				status = "disabled";
 			};
 
-			rtt: rtt@fffffe20 {
+			rtt: rtc@fffffe20 {
 				compatible = "microchip,sam9x60-rtt", "atmel,at91sam9260-rtt";
 				reg = <0xfffffe20 0x20>;
 				interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
diff --git a/arch/arm/boot/dts/sama7g5.dtsi b/arch/arm/boot/dts/sama7g5.dtsi
index 5cb9bd2..edcf921 100644
--- a/arch/arm/boot/dts/sama7g5.dtsi
+++ b/arch/arm/boot/dts/sama7g5.dtsi
@@ -209,7 +209,7 @@
 			status = "disabled";
 		};
 
-		rtt: rtt@e001d020 {
+		rtt: rtc@e001d020 {
 			compatible = "microchip,sama7g5-rtt", "microchip,sam9x60-rtt", "atmel,at91sam9260-rtt";
 			reg = <0xe001d020 0x30>;
 			interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;