ddr: altera: agilex: Add SDRAM driver for Agilex

Add SDRAM driver for Agilex SoC.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
diff --git a/drivers/ddr/altera/sdram_soc64.h b/drivers/ddr/altera/sdram_soc64.h
index 7d018e7..7b25a80 100644
--- a/drivers/ddr/altera/sdram_soc64.h
+++ b/drivers/ddr/altera/sdram_soc64.h
@@ -65,6 +65,7 @@
 /* HMC MMR IO48 registers */
 #define CTRLCFG0			0x28
 #define CTRLCFG1			0x2c
+#define CTRLCFG3                        0x34
 #define DRAMTIMING0			0x50
 #define CALTIMING0			0x7c
 #define CALTIMING1			0x80