powerpc/t2080qds: fix rtc interrupt

RTC interrupt uses IRQ11 on T2080QDS.
Signed-off-by: NShengzhou Liu <Shengzhou.Liu@freescale.com>
[scottwood@freescale.com: fix subject line]
Signed-off-by: NScott Wood <scottwood@freescale.com>

arch/powerpc/boot/dts/t208xqds.dtsi

@@ -152,7 +152,7 @@
 					rtc@68 {
 						compatible = "dallas,ds3232";
 						reg = <0x68>;
-						interrupts = <0x1 0x1 0 0>;
+						interrupts = <0xb 0x1 0 0>;
 					};
 				};