powerpc/mpc85xx: Add workaround for DDR erratum A004508

When the DDR controller is initialized below a junction temperature of
0°C and then operated above a junction temperature of 65°C, the DDR
controller may cause receive data errors, resulting ECC errors and/or
corrupted data. This erratum applies to the following SoCs and their
variants: MPC8536, MPC8569, MPC8572, P1010, P1020, P1021, P1022, P1023,
P2020.

Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index 3d37a76..f69c834 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -231,6 +231,9 @@
 	if ((SVR_MAJ(svr) == 1) || IS_SVR_REV(svr, 2, 0))
 		puts("Work-around for Erratum NMG ETSEC129 enabled\n");
 #endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004508
+	puts("Work-around for Erratum A004508 enabled\n");
+#endif
 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
 	puts("Work-around for Erratum A004510 enabled\n");
 #endif