powerpc/44x: The bug fixed support for APM821xx SoC and Bluestone board

This patch consists of:
- Fix the pvr mask for checking pvr in cputable.c
- Fix the cpu name as consistent with cpu name is describled in dts file
Signed-off-by: Vinh Nguyen Huu Tuong <vhtnguyen@apm.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>

arch/powerpc/kernel/cputable.c

@@ -1816,7 +1816,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
 		.platform		= "ppc440",
 	},
 	{ /* 464 in APM821xx */
-		.pvr_mask		= 0xffffff00,
+		.pvr_mask		= 0xfffffff0,
 		.pvr_value		= 0x12C41C80,
 		.cpu_name		= "APM821XX",
 		.cpu_features		= CPU_FTRS_44X,

arch/powerpc/platforms/44x/ppc44x_simple.c

@@ -52,7 +52,7 @@ machine_device_initcall(ppc44x_simple, ppc44x_device_probe);
 static char *board[] __initdata = {
 	"amcc,arches",
 	"amcc,bamboo",
-	"amcc,bluestone",
+	"apm,bluestone",
 	"amcc,glacier",
 	"ibm,ebony",
 	"amcc,eiger",