ARM: mvebu: a38x: restore support for setting timing

This restores support for configuring the timing mode based on the
ddr_topology. This was originally implemented in commit 90bcc3d38d2b
("driver/ddr: Add support for setting timing in hws_topology_map") but
was removed as part of the upstream sync.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/ddr/marvell/a38x/mv_ddr_topology.h b/drivers/ddr/marvell/a38x/mv_ddr_topology.h
index eb017a1..7bef2d1 100644
--- a/drivers/ddr/marvell/a38x/mv_ddr_topology.h
+++ b/drivers/ddr/marvell/a38x/mv_ddr_topology.h
@@ -36,6 +36,12 @@
 	MV_DDR_TEMP_HIGH
 };
 
+enum mv_ddr_timing {
+	MV_DDR_TIM_DEFAULT,
+	MV_DDR_TIM_1T,
+	MV_DDR_TIM_2T
+};
+
 enum mv_ddr_timing_data {
 	MV_DDR_TCK_AVG_MIN, /* sdram min cycle time (t ck avg min) */
 	MV_DDR_TAA_MIN, /* min cas latency time (t aa min) */