[POWERPC] Remove CPU_FTR_NEED_COHERENT for 7448.

Remove CPU_FTR_NEED_COHERENT for MPC7448 (and single-core MPC86xx).
This prevents needlessly setting M=1 when not SMP.

Signed-off-by: James.Yang <James.Yang@freescale.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 9cb24d2..6ef87fb 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -836,7 +836,7 @@
 		.pvr_mask		= 0xffff0000,
 		.pvr_value		= 0x80040000,
 		.cpu_name		= "7448",
-		.cpu_features		= CPU_FTRS_7447A,
+		.cpu_features		= CPU_FTRS_7448,
 		.cpu_user_features	= COMMON_USER |
 			PPC_FEATURE_HAS_ALTIVEC_COMP | PPC_FEATURE_PPC_LE,
 		.icache_bsize		= 32,