[source] sunxi: add Orange Pi 2 support

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/f9ecb0d562bd1dab9dadb150f6a6c146b948fc5c

commit f9ecb0d562bd1dab9dadb150f6a6c146b948fc5c
Author: Zoltan HERPAI <wigyori at uid0.hu>
AuthorDate: Mon Oct 23 22:33:00 2017 +0200

    sunxi: add Orange Pi 2 support
    
    - H3 @ 1.3 GHz
    - 1GiB DDR3
    - 10/100Mbps Ethernet
    - Realtek RTL8189ETV wifi
    - 4 USB 2.0
    
    Difference to the "Orange Pi Plus" is the lack of Gbit ethernet
    and lack of onboard flash.
    
    Signed-off-by: Zoltan HERPAI <wigyori at uid0.hu>
---
 package/boot/uboot-sunxi/Makefile     | 7 +++++++
 target/linux/sunxi/image/cortex-a7.mk | 9 +++++++++
 2 files changed, 16 insertions(+)

diff --git a/package/boot/uboot-sunxi/Makefile b/package/boot/uboot-sunxi/Makefile
index d986f62..c5337c9 100644
--- a/package/boot/uboot-sunxi/Makefile
+++ b/package/boot/uboot-sunxi/Makefile
@@ -150,6 +150,12 @@ define U-Boot/orangepi_plus
   BUILD_DEVICES:=sun8i-h3-orangepi-plus
 endef
 
+define U-Boot/orangepi_2
+  BUILD_SUBTARGET:=cortexa7
+  NAME:=Orange Pi 2 (H3)
+  BUILD_DEVICES:=sun8i-h3-orangepi-2
+endef
+
 define U-Boot/pangolin
   BUILD_SUBTARGET:=cortexa7
   NAME:=Theobroma A31-yQ7 devboard
@@ -185,6 +191,7 @@ UBOOT_TARGETS := \
 	nanopi_neo \
 	orangepi_r1 \
 	orangepi_plus \
+	orangepi_2 \
 	pangolin \
 	pine64_plus
 
diff --git a/target/linux/sunxi/image/cortex-a7.mk b/target/linux/sunxi/image/cortex-a7.mk
index d0b7aa0..d219a1d 100644
--- a/target/linux/sunxi/image/cortex-a7.mk
+++ b/target/linux/sunxi/image/cortex-a7.mk
@@ -136,6 +136,15 @@ endef
 
 TARGET_DEVICES += sun8i-h3-orangepi-plus
 
+define Device/sun8i-h3-orangepi-2
+  DEVICE_TITLE:=Xunlong Orange Pi 2
+  DEVICE_PACKAGES:=kmod-rtc-sunxi
+  SUPPORTED_DEVICES:=xunlong,orangepi-2
+  SUNXI_DTS:=sun8i-h3-orangepi-2
+endef
+
+TARGET_DEVICES += sun8i-h3-orangepi-2
+
 
 define Device/sun7i-a20-pcduino3
   DEVICE_TITLE:=LinkSprite pcDuino3