ARM: dts: imx25.dtsi: DryIce security violation interrupt

The DryIce block on i.MX25 chipset uses two interrupts: A normal and a
security violation interrupt. Add the security violation interrupt to
the list, it is optional.
Signed-off-by: NMartin Kaiser <martin@kaiser.cx>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx25.dtsi

@@ -561,7 +561,7 @@
 				reg = <0x53ffc000 0x4000>;
 				clocks = <&clks 81>;
 				clock-names = "ipg";
-				interrupts = <25>;
+				interrupts = <25 56>;
 			};
 		};