rockchip: add px30-evb board

The px30 evb is an evaluation board for the px30 together with a dsi-
connected display. This adds board and config files for it.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/board/rockchip/evb_px30/Makefile b/board/rockchip/evb_px30/Makefile
new file mode 100644
index 0000000..74b0b9f
--- /dev/null
+++ b/board/rockchip/evb_px30/Makefile
@@ -0,0 +1,7 @@
+#
+# (C) Copyright 2017 Rockchip Electronics Co., Ltd
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y	+= evb_px30.o