powerpc/85xx: Use fsl,mpc85.. as prefix for memory ctrl & l2-cache nodes

Older devices tree's used "fsl,85.." instead of the preferred
"fsl,mpc85.." for the memory controller & l2 cache controller nodes.
The EDAC code is the only use of these and has been updated for some
time to support both "fsl,85.." and "fsl,mpc85.."

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/boot/dts/sbc8548.dts b/arch/powerpc/boot/dts/sbc8548.dts
index 9c5079f..b1f1416 100644
--- a/arch/powerpc/boot/dts/sbc8548.dts
+++ b/arch/powerpc/boot/dts/sbc8548.dts
@@ -156,14 +156,14 @@
 		compatible = "simple-bus";
 
 		memory-controller@2000 {
-			compatible = "fsl,8548-memory-controller";
+			compatible = "fsl,mpc8548-memory-controller";
 			reg = <0x2000 0x1000>;
 			interrupt-parent = <&mpic>;
 			interrupts = <0x12 0x2>;
 		};
 
 		L2: l2-cache-controller@20000 {
-			compatible = "fsl,8548-l2-cache-controller";
+			compatible = "fsl,mpc8548-l2-cache-controller";
 			reg = <0x20000 0x1000>;
 			cache-line-size = <0x20>;	// 32 bytes
 			cache-size = <0x80000>;	// L2, 512K