drivers: renesas: common: Add support for DRAM initialization on RZ/G2E SoC

DRAM initialization on RZ/G2E SoC is identical to R-Car E3 so re-use the
same.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Change-Id: I454fb40af4f8ce6c4c0d2a53edb307326efd02df
diff --git a/drivers/renesas/common/ddr/ddr_a/ddr_a.mk b/drivers/renesas/common/ddr/ddr_a/ddr_a.mk
index ed3a55e..cd6433d 100644
--- a/drivers/renesas/common/ddr/ddr_a/ddr_a.mk
+++ b/drivers/renesas/common/ddr/ddr_a/ddr_a.mk
@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
-ifeq (${RCAR_LSI},${RCAR_E3})
+ifeq ($(RCAR_LSI),$(filter $(RCAR_LSI),${RCAR_E3} ${RZ_G2E}))
 BL2_SOURCES += drivers/renesas/common/ddr/ddr_a/ddr_init_e3.c
 else ifeq (${RCAR_LSI},${RCAR_D3})
 BL2_SOURCES += drivers/renesas/common/ddr/ddr_a/ddr_init_d3.c