powerpc/mpc8xxx: Add fine timing support for DDR3

When the DDR3 speed goes higher, we need to utilize fine offset
from SPD.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/arch/powerpc/include/asm/fsl_ddr_dimm_params.h b/arch/powerpc/include/asm/fsl_ddr_dimm_params.h
index 982b809..ffe4db8 100644
--- a/arch/powerpc/include/asm/fsl_ddr_dimm_params.h
+++ b/arch/powerpc/include/asm/fsl_ddr_dimm_params.h
@@ -43,6 +43,7 @@
 	/* DIMM timing parameters */
 
 	unsigned int mtb_ps;	/* medium timebase ps, only for ddr3 */
+	unsigned int ftb_10th_ps; /* fine timebase, in 1/10 ps, only for ddr3 */
 	unsigned int tAA_ps;	/* minimum CAS latency time, only for ddr3 */
 	unsigned int tFAW_ps;	/* four active window delay, only for ddr3 */