ddr: marvell: a38x: Allow boards to specify CK_DELAY parameter

For some layouts it is necessary to adjust the CK_DELAY parameter to
successfully complete DDR training. Add the ability to specify the
CK_DELAY in the mv_ddr_topology_map.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
diff --git a/board/alliedtelesis/x530/x530.c b/board/alliedtelesis/x530/x530.c
index e0fa806..04b053d 100644
--- a/board/alliedtelesis/x530/x530.c
+++ b/board/alliedtelesis/x530/x530.c
@@ -66,7 +66,11 @@
 	BUS_MASK_32BIT_ECC,		/* subphys mask */
 	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
 	{ {0} },			/* raw spd data */
-	{0}				/* timing parameters */
+	{0},				/* timing parameters */
+	{ {0} },			/* electrical configuration */
+	{0},				/* electrical parameters */
+	0,				/* Clock enable mask */
+	160				/* Clock delay */
 };
 
 struct mv_ddr_topology_map *mv_ddr_topology_map_get(void)