tools: renesas: Add tool support for RZ/G2 platforms

Add tool support for creating bootparam and cert_header images
for RZ/G2 SoC based platforms.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Change-Id: Iab8ba6eda442c8d75f23c5633b8178f86339e4c9
diff --git a/.gitignore b/.gitignore
index 64b389b..79c5104 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,10 @@
 tools/renesas/rcar_layout_create/*.srec
 tools/renesas/rcar_layout_create/*.map
 tools/renesas/rcar_layout_create/*.elf
+tools/renesas/rzg_layout_create/*.bin
+tools/renesas/rzg_layout_create/*.srec
+tools/renesas/rzg_layout_create/*.map
+tools/renesas/rzg_layout_create/*.elf
 tools/fiptool/fiptool
 tools/fiptool/fiptool.exe
 tools/cert_create/src/*.o