drivers: renesas: common: Add support for DRAM initialization on RZ/G2N SoC

Add support for initializing DRAM on RZ/G2N SoC.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Change-Id: Id09a367b92b11a5da88f2dce6887677cc935d0c0
diff --git a/plat/renesas/common/common.mk b/plat/renesas/common/common.mk
index f68f40d..fb8fba4 100644
--- a/plat/renesas/common/common.mk
+++ b/plat/renesas/common/common.mk
@@ -35,6 +35,7 @@
 RCAR_AUTO:=99
 RZ_G2M:=100
 RZ_G2H:=101
+RZ_G2N:=102
 $(eval $(call add_define,RCAR_H3))
 $(eval $(call add_define,RCAR_M3))
 $(eval $(call add_define,RCAR_M3N))
@@ -45,6 +46,7 @@
 $(eval $(call add_define,RCAR_AUTO))
 $(eval $(call add_define,RZ_G2M))
 $(eval $(call add_define,RZ_G2H))
+$(eval $(call add_define,RZ_G2N))
 
 RCAR_CUT_10:=0
 RCAR_CUT_11:=1