rockchip: board: add Hardkernel Odroid Go2 board

Also known as Odroid Go Advance but named Go2 internally by the
vendor it seems.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/board/hardkernel/odroid_go2/Makefile b/board/hardkernel/odroid_go2/Makefile
new file mode 100644
index 0000000..51b9d24
--- /dev/null
+++ b/board/hardkernel/odroid_go2/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (c) 2020 Theobroma Systems Design und Consulting GmbH
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y	+= go2.o