imx: kontron-sl-mx8mm: Use new LPDDR4 config parameters

These parameters are needed for stable performance on new hardware
with Nanya LPDDR4 chips.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Fabio Estevam <festevam@denx.de>
diff --git a/board/kontron/sl-mx8mm/spl.c b/board/kontron/sl-mx8mm/spl.c
index 447da13..affdc13 100644
--- a/board/kontron/sl-mx8mm/spl.c
+++ b/board/kontron/sl-mx8mm/spl.c
@@ -89,10 +89,10 @@
 		dram_timing.ddrc_cfg[2].val = 0xa1080020;
 		dram_timing.ddrc_cfg[37].val = 0x1f;
 
-		dram_timing.fsp_msg[0].fsp_cfg[9].val = 0x110;
-		dram_timing.fsp_msg[0].fsp_cfg[21].val = 0x1;
-		dram_timing.fsp_msg[1].fsp_cfg[10].val = 0x110;
-		dram_timing.fsp_msg[1].fsp_cfg[22].val = 0x1;
+		dram_timing.fsp_msg[0].fsp_cfg[8].val = 0x110;
+		dram_timing.fsp_msg[0].fsp_cfg[20].val = 0x1;
+		dram_timing.fsp_msg[1].fsp_cfg[9].val = 0x110;
+		dram_timing.fsp_msg[1].fsp_cfg[21].val = 0x1;
 		dram_timing.fsp_msg[2].fsp_cfg[10].val = 0x110;
 		dram_timing.fsp_msg[2].fsp_cfg[22].val = 0x1;