ARM: dts: pxa*: Fix up encoding of the /rtc interrupts property

This way the device tree validator learns that each cell of the property
constitutes a separate item. Otherwise it gets unnecessairly upset:

  pxa168-aspenite.dt.yaml: rtc@d4010000: interrupts: [[5, 6]] is too short
  pxa910-dkb.dt.yaml: rtc@d4010000: interrupts: [[5, 6]] is too short

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/pxa168.dtsi

@@ -143,7 +143,7 @@
 			rtc: rtc@d4010000 {
 				compatible = "mrvl,mmp-rtc";
 				reg = <0xd4010000 0x1000>;
-				interrupts = <5 6>;
+				interrupts = <5>, <6>;
 				interrupt-names = "rtc 1Hz", "rtc alarm";
 				clocks = <&soc_clocks PXA168_CLK_RTC>;
 				resets = <&soc_clocks PXA168_CLK_RTC>;

arch/arm/boot/dts/pxa910.dtsi

@@ -155,7 +155,7 @@
 			rtc: rtc@d4010000 {
 				compatible = "mrvl,mmp-rtc";
 				reg = <0xd4010000 0x1000>;
-				interrupts = <5 6>;
+				interrupts = <5>, <6>;
 				interrupt-names = "rtc 1Hz", "rtc alarm";
 				clocks = <&soc_clocks PXA910_CLK_RTC>;
 				resets = <&soc_clocks PXA910_CLK_RTC>;