[POWERPC] 83xx: Correct 2nd PCI controller interrupt value in mpc834x_mds dts

According to the 8349EA ref man, the second PCI PHB IRQ is 67.  Thanks to Peter
Van Ackeren for finding this.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/mpc834x_mds.dts

@@ -332,7 +332,7 @@ pci1: pci@e0008600 {
 				 0xc000 0x0 0x0 0x3 &ipic 23 0x8
 				 0xc000 0x0 0x0 0x4 &ipic 20 0x8>;
 		interrupt-parent = <&ipic>;
-		interrupts = <66 0x8>;
+		interrupts = <67 0x8>;
 		bus-range = <0 0>;
 		ranges = <0x02000000 0x0 0xb0000000 0xb0000000 0x0 0x10000000
 			  0x42000000 0x0 0xa0000000 0xa0000000 0x0 0x10000000