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>

board/rockchip/evb_px30/Kconfig

@@ -0,0 +1,15 @@
+if TARGET_EVB_PX30
+
+config SYS_BOARD
+	default "evb_px30"
+
+config SYS_VENDOR
+	default "rockchip"
+
+config SYS_CONFIG_NAME
+	default "evb_px30"
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+
+endif

board/rockchip/evb_px30/MAINTAINERS

@@ -0,0 +1,6 @@
+EVB-PX30
+M:      Kever Yang <kever.yang@rock-chips.com>
+S:      Maintained
+F:      board/rockchip/evb_px30
+F:      include/configs/evb_px30.h
+F:      configs/evb-px30_defconfig

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

board/rockchip/evb_px30/evb_px30.c

@@ -0,0 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2019 Rockchip Electronics Co., Ltd
+ */