sunxi: Add defconfig and dts file for Orange Pi One SBC

The Orange Pi One SBC, is a stripped down version of the popular
Orange Pi PC. The one is a H3 based SBC, with 512M of RAM,
micro-sd slot, 1 host usb, 1 otg usb, hdmi and 100Mbit ethernet.

The dts is identical to the dts submitted to the upstream kernel.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index 430d770..2cb8a75 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -55,6 +55,7 @@
 F:	configs/ga10h_v1_1_defconfig
 F:	configs/gt90h_v4_defconfig
 F:	configs/orangepi_2_defconfig
+F:	configs/orangepi_one_defconfig
 F:	configs/orangepi_pc_defconfig
 F:	configs/orangepi_plus_defconfig
 F:	configs/polaroid_mid2809pxe04_defconfig