Bump buidlroot version to 2018.02.6

bsp/buildroot/board/embest/riotboard/readme.txt

@@ -1,46 +0,0 @@
-Buildroot for Embest RIoTboard
-==============================
-
-1. Compiling buildroot
-----------------------
-
-make riotboard_defconfig
-make
-
-2. Installing buildroot
------------------------
-
-Prepare an SD-card and plug it into your card reader. Write the bootloader to
-your SD-card:
-
-sudo dd if=output/images/u-boot.imx of=/dev/sdX bs=1k seek=1
-
-Create 1 partition on the SD-card using your favourite tool. The
-partition should be big enough to hold your rootfs, for example
-128MiB. Here's an example partition layout:
-
-   Device Boot      Start         End      Blocks   Id  System
-/dev/sdX1            2048      264191      131072   83  Linux
-
-Format the SD-card partition with your favourite filesystem:
-
-sudo mkfs.ext2 /dev/sdX1
-
-Deploy your rootfs to the SD-card:
-
-sudo mkdir /mnt/sdcard/
-sudo mount /dev/sdX1 /mnt/sdcard/
-sudo tar xf output/images/rootfs.tar -C /mnt/sdcard/
-sudo umount /dev/sdX1
-
-3. Running buildroot
---------------------
-
-Position the board so you can read the label "RIoTboard" on the right side of
-SW1 DIP switches. Configure the SW1 swiches like this:
-
-10100101 (1 means ON position, 0 means OFF position)
-
-Now plug your prepared SD-card in slot J6. Connect a serial console (115200, 8,
-N, 1) to header J18. Connect a 5V/1A power supply to the board and enjoy your
-new toy.

bsp/buildroot/board/embest/riotboard/rootfs_overlay/boot/extlinux/extlinux.conf

@@ -1,6 +0,0 @@
-default buildroot
-
-label buildroot
-kernel /boot/uImage
-devicetree /boot/imx6dl-riotboard.dtb
-append console=ttymxc1,115200 root=/dev/mmcblk0p1 rw