[POWERPC] 85xx: minor .dts cleanups

* remove #cpus from mpc8544ds.dts (not used anywhere else)
* remove memreserve from mpc8568mds.dts (not needed)
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/mpc8544ds.dts

@@ -28,7 +28,6 @@
 	};
 
 	cpus {
-		#cpus = <0x1>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 

arch/powerpc/boot/dts/mpc8568mds.dts

@@ -11,10 +11,6 @@
 
 /dts-v1/;
 
-/*
-/memreserve/	00000000 1000000;
-*/
-
 / {
 	model = "MPC8568EMDS";
 	compatible = "MPC8568EMDS", "MPC85xxMDS";