ARM: at91/dt: sama5: update rstc to correct compatible string

They'll use "atmel,sama5d3-rstc" for reset function.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: add the old compatible string as a fallback]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/sama5d3.dtsi

@@ -1259,7 +1259,7 @@ mpddr_clk: mpddr_clk {
 			};
 
 			rstc@fffffe00 {
-				compatible = "atmel,at91sam9g45-rstc";
+				compatible = "atmel,sama5d3-rstc", "atmel,at91sam9g45-rstc";
 				reg = <0xfffffe00 0x10>;
 			};
 

arch/arm/boot/dts/sama5d4.dtsi

@@ -1268,7 +1268,7 @@ sha@fc050000 {
 			};
 
 			rstc@fc068600 {
-				compatible = "atmel,at91sam9g45-rstc";
+				compatible = "atmel,sama5d3-rstc", "atmel,at91sam9g45-rstc";
 				reg = <0xfc068600 0x10>;
 			};