powerpc/85xx: Rename MPC8572 DDR erratum to DDR115

Use unique erratum number instead of platform number.
Enable command that reports errata on MPC8572DS.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index c771a4b..a1a3d6b 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -77,6 +77,7 @@
 #define CONFIG_MAX_CPUS			2
 #define CONFIG_SYS_FSL_NUM_LAWS		12
 #define CONFIG_SYS_FSL_SEC_COMPAT	2
+#define CONFIG_SYS_FSL_ERRATUM_DDR_115
 
 #elif defined(CONFIG_P1010)
 #define CONFIG_MAX_CPUS			1