[POWERPC] 4xx: Add "amcc, haleakala" to the toplevel compatible property

Currently Haleakala uses the Kilauea platform code. This patch adds
"haleakala" to the compatible property, in case later kernel versions
will introduce a Haleakala platform code.
Signed-off-by: NStefan Roese <sr@denx.de>
Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>

arch/powerpc/boot/dts/haleakala.dts

@@ -12,7 +12,7 @@
 	#address-cells = <1>;
 	#size-cells = <1>;
 	model = "amcc,haleakala";
-	compatible = "amcc,kilauea";
+	compatible = "amcc,haleakala", "amcc,kilauea";
 	dcr-parent = <&/cpus/cpu@0>;
 
 	aliases {