Update buidlroot to version 2016.08.1

bsp/buildroot/board/pandaboard/readme.txt

@@ -0,0 +1,46 @@
+Pandaboard
+==========
+
+This file documents the Buildroot support for the Pandaboard, a
+low-power, low-cost single-board computer development platform based
+on the Texas Instruments OMAP4 system on a chip (SoC).
+
+Configuring and building Buildroot
+----------------------------------
+
+Start from the defconfig:
+
+  $ make pandaboard_defconfig
+
+You can edit build options the usual way:
+
+  $ make menuconfig
+
+When you are happy with the setup, run:
+
+  $ make
+
+The result of the build with the default settings should be these files:
+
+  output/images
+  ├── MLO
+  ├── omap4-panda-a4.dtb
+  ├── omap4-panda.dtb
+  ├── omap4-panda-es.dtb
+  ├── rootfs.ext4
+  ├── sdcard.img
+  ├── u-boot.img
+  └── zImage
+
+How to write the SD card
+------------------------
+
+Once the build process is finished you will have an image called "sdcard.img"
+in the output/images/ directory.
+
+Copy the bootable "sdcard.img" onto an SD card with "dd":
+
+  $ sudo dd if=output/images/sdcard.img of=/dev/sdX
+
+Where /dev/sdX is the device node of your SD card (may be /dev/mmcblkX
+instead depending on setup).