sunxi: Add support for Orangepi Plus and Orangepi PC boards

Add defconfig files for the Orangepi Plus and Orangepi PC.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index 96c4f3a..d9cda67 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -50,6 +50,8 @@
 F:	include/configs/sun8i.h
 F:	configs/ga10h_v1_1_defconfig
 F:	configs/gt90h_v4_defconfig
+F:	configs/orangepi_pc_defconfig
+F:	configs/orangepi_plus_defconfig
 F:	configs/q8_a23_tablet_800x480_defconfig
 F:	configs/q8_a33_tablet_800x480_defconfig
 F:	configs/q8_a33_tablet_1024x600_defconfig