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>
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 81db9e2..87353ba 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1816,7 +1816,7 @@
 		.platform		= "ppc440",
 	},
 	{ /* 464 in APM821xx */
-		.pvr_mask		= 0xffffff00,
+		.pvr_mask		= 0xfffffff0,
 		.pvr_value		= 0x12C41C80,
 		.cpu_name		= "APM821XX",
 		.cpu_features		= CPU_FTRS_44X,