rockchip: add evb_rk3229 board

evb_rk3229 is a RK3229 based board, with:
- 8GB eMMC;
- 1GB DDR SDRAM;
- 2 USB2.0 HOST port;
- 1 MAC port;
- 1 HDMI port;
- IR;
- WiFi;

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/board/rockchip/evb_rk3229/MAINTAINERS b/board/rockchip/evb_rk3229/MAINTAINERS
new file mode 100644
index 0000000..dfa1090
--- /dev/null
+++ b/board/rockchip/evb_rk3229/MAINTAINERS
@@ -0,0 +1,6 @@
+EVB-RK3229
+M:      Kever Yang <kever.yang@rock-chips.com>
+S:      Maintained
+F:      board/rockchip/evb_rk3229
+F:      include/configs/evb_rk3229.h
+F:      configs/evb-rk3229_defconfig