update buildroot to 2017.02.11

bsp/buildroot-2017.02.11/board/nanopi-neo/readme.txt

@@ -0,0 +1,43 @@
+Intro
+=====
+
+The instructions herein are valid for the FriendlyARM NanoPi NEO,
+both the 256MiB and 512MiB versions. They should also work the the
+NanoPi NEO Air, but this is untested so far.
+
+The FriendlyARM Nanopi NEO is a 4x4cm² board with an Allwiner H3 SoC:
+  - quad-core Cortex-A7 @1.2GHz
+  - 256 or 512MiB of DDR
+  - uSDCard as only storage option
+  - 3x USB 2.0 host (one socket, two on expansion pin-holes)
+  - 1x USB 2.0 OTG (also used as power source)
+  - 10/100 ethernet MAC
+  - GPIOs, SPI, I2c...
+
+Support for the Nanopi NEO in U-Boot and Linux is very recent, so
+much so that we have to use an -rc tag for U-Boot and a special
+Linux tree.
+
+Unfortunately, support for the ethernet MAC and the USB OTG are not
+yet upstream, but are being actively worked on.
+
+
+How to build
+============
+
+    $ make nanopi_neo_defconfig
+    $ make
+
+Note: you will need access to the internet to download the required
+sources.
+
+You will then obtain an image ready to be written to your micro SDcard:
+
+    $ dd if=output/images/sdcard.img of=/dev/sdX bs=1M
+
+Notes:
+  - replace 'sdX' with the actual device with your micro SDcard,
+  - you may need to be root to do that (use 'sudo').
+
+Insert the micro SDcard in your NanoPi NEO and power it up. The console
+is on the serial line, 115200 8N1.