tcl/board: Add Renesas Falcon board

Add board configuration for Renesas Falcon board based on the R8A779A0 V3U SoC.

Change-Id: If8369f2e2b97dfea9ccbee2c9b916ef7094f9b92
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Reviewed-on: http://openocd.zylin.com/6315
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

tcl/board/renesas_falcon.cfg

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Renesas R-Car V3U Falcon Board Config
+
+# The Falcon board comes with either an V3U SOC.
+
+echo "\nFalcon:"
+if { ![info exists SOC] } {
+	set SOC V3U
+}
+source [find target/renesas_rcar_gen3.cfg]