renesas: rzg: Add support to identify EK874 RZ/G2E board

Add support to identify Silicon Linux RZ/G2E evaluation kit (EK874).

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Change-Id: Id7bdbc9b0d25aa9af496d58d4bd5055579edc104
diff --git a/plat/renesas/rzg/platform.mk b/plat/renesas/rzg/platform.mk
index 3295694..f37d7d0 100644
--- a/plat/renesas/rzg/platform.mk
+++ b/plat/renesas/rzg/platform.mk
@@ -64,6 +64,23 @@
       endif
       $(eval $(call add_define,RCAR_LSI_CUT))
     endif
+  else ifeq (${LSI},G2E)
+    RCAR_LSI:=${RZ_G2E}
+    ifndef LSI_CUT
+      # enable compatible function.
+      RCAR_LSI_CUT_COMPAT := 1
+      $(eval $(call add_define,RCAR_LSI_CUT_COMPAT))
+    else
+      # disable compatible function.
+      ifeq (${LSI_CUT},10)
+        RCAR_LSI_CUT:=0
+      else ifeq (${LSI_CUT},11)
+        RCAR_LSI_CUT:=1
+      else
+        $(error "Error: ${LSI_CUT} is not supported.")
+      endif
+      $(eval $(call add_define,RCAR_LSI_CUT))
+    endif
   else
     $(error "Error: ${LSI} is not supported.")
   endif