Added missing c_tech_arria10_e2sg => g_ddr4; for unb2c.

libraries/technology/ddr/tech_ddr_pkg.vhd

@@ -198,10 +198,11 @@ PACKAGE BODY tech_ddr_pkg IS
   FUNCTION func_tech_sel_ddr(g_technology : NATURAL; g_ddr3, g_ddr4 : t_c_tech_ddr) RETURN t_c_tech_ddr IS
   BEGIN
     CASE g_technology IS
-      WHEN c_tech_stratixiv        => RETURN g_ddr3;
-      WHEN c_tech_arria10          => RETURN g_ddr4;
-      WHEN c_tech_arria10_e3sge3   => RETURN g_ddr4;
-      WHEN c_tech_arria10_e1sg     => RETURN g_ddr4;
+      WHEN c_tech_stratixiv        => RETURN g_ddr3;  -- unb1
+      WHEN c_tech_arria10          => RETURN g_ddr4;  -- unb2
+      WHEN c_tech_arria10_e3sge3   => RETURN g_ddr4;  -- unb2
+      WHEN c_tech_arria10_e1sg     => RETURN g_ddr4;  -- unb2b
+      WHEN c_tech_arria10_e2sg     => RETURN g_ddr4;  -- unb2c
       WHEN OTHERS                  => RETURN g_ddr3;
     END CASE;
   END;