powerpc: Fix whitespace merge in mpc8641 hpcn device tree

When we coverted the .dts to v1 we lost a space between the irq
and its polarity/sense information.  This causes a bit of chaos
as the reset of the blob is off by one cell.

This was noticed by booting and getting errors w/ATA due to
lock of interrupts.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/mpc8641_hpcn.dts

@@ -411,7 +411,7 @@
 			0xe000 0 0 1 &i8259 12 2
 			0xe100 0 0 2 &i8259 9 2
 			0xe200 0 0 3 &i8259 10 2
-			0xe300 0 0 4 &i8259 112
+			0xe300 0 0 4 &i8259 11 2
 
 			// IDSEL 0x1d  Audio
 			0xe800 0 0 1 &i8259 6 2