ARM: sun7i: add support for A20-OLinuXino-Lime2

This adds support for the Olimex A20-OLinuXino-Lime2
https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXIno-LIME2

Differences to previous Lime boards are 1GB RAM and gigabit ethernet
---

changes for v2
add axp209 regulators node

 arch/arm/boot/dts/Makefile                      |   1 +
 arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts | 215 ++++++++++++++++++++++++
 2 files changed, 216 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts

index 8f12390..ff5324f 100644
@@ -439,6 +439,7 @@ dtb-$(CONFIG_MACH_SUN7I) += \
     sun7i-a20-hummingbird.dtb \
     sun7i-a20-i12-tvbox.dtb \
     sun7i-a20-olinuxino-lime.dtb \
+    sun7i-a20-olinuxino-lime2.dtb \
     sun7i-a20-olinuxino-micro.dtb \
     sun7i-a20-pcduino3.dtb
 dtb-$(CONFIG_MACH_SUN8I) += \

1.8.5.1