ARM: dts: at91: sama5d4: fix instance id of DBGU

Change instance id of DBGU to 45.
Signed-off-by: Mohamed Jamsheeth Hajanajubudeen <mohamedjamsheeth.hajanajubudeen@atmel.com>
Fixes: 7c661394 ("ARM: at91: dt: add device tree file for SAMA5D4 SoC")
Cc: stable@vger.kernel.org   # 3.18+
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/sama5d4.dtsi

@@ -1342,7 +1342,7 @@ rtc@fc0686b0 {
 			dbgu: serial@fc069000 {
 				compatible = "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
 				reg = <0xfc069000 0x200>;
-				interrupts = <2 IRQ_TYPE_LEVEL_HIGH 7>;
+				interrupts = <45 IRQ_TYPE_LEVEL_HIGH 7>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_dbgu>;
 				clocks = <&dbgu_clk>;