board: Add Chameleonv3 board dir

Add board directory for Google Chameleon V3 board

Signed-off-by: Paweł Anikiel <pan@semihalf.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/google/chameleonv3/Makefile b/board/google/chameleonv3/Makefile
new file mode 100644
index 0000000..bb413fd
--- /dev/null
+++ b/board/google/chameleonv3/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright 2022 Google LLC
+
+obj-y	:= board.o mercury_aa1.o