powerpc/44x: Fix PCI node in Yosemite DTS

The stanza for PCI was copied from Bamboo which has four PCI slots.  Yosemite
only has one PCI slot which is mapped to IDSEL 12, ADDR 22, IRQ2 Vector 25,
INTA.
Signed-off-by: Curtis Wald <cwald@watchguardvideo.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

arch/powerpc/boot/dts/yosemite.dts

@@ -282,20 +282,10 @@
 			/* Inbound 2GB range starting at 0 */
 			dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x80000000>;
 
-			/* Bamboo has all 4 IRQ pins tied together per slot */
 			interrupt-map-mask = <0xf800 0x0 0x0 0x0>;
 			interrupt-map = <
-				/* IDSEL 1 */
-				0x800 0x0 0x0 0x0 &UIC0 0x1c 0x8
-
-				/* IDSEL 2 */
-				0x1000 0x0 0x0 0x0 &UIC0 0x1b 0x8
-
-				/* IDSEL 3 */
-				0x1800 0x0 0x0 0x0 &UIC0 0x1a 0x8
-
-				/* IDSEL 4 */
-				0x2000 0x0 0x0 0x0 &UIC0 0x19 0x8
+				/* IDSEL 12 */
+				0x6000 0x0 0x0 0x0 &UIC0 0x19 0x8
 			>;
 		};
 	};