Update buidlroot to version 2016.08.1

bsp/buildroot/board/firefly/firefly-rk3288/extlinux.conf

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+default firefly-rk3288
+
+label firefly-rk3288
+kernel /boot/uImage
+devicetree /boot/rk3288-firefly.dtb
+append console=ttyS2,115200n8 root=/dev/mmcblk0p1 rootwait

bsp/buildroot/board/firefly/firefly-rk3288/post-build.sh

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+BOARD_DIR="$(dirname $0)"
+
+install -m 0644 -D $BOARD_DIR/extlinux.conf $TARGET_DIR/boot/extlinux/extlinux.conf

bsp/buildroot/board/firefly/firefly-rk3288/post-image.sh

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+#!/bin/sh
+
+MKIMAGE=$HOST_DIR/usr/bin/mkimage
+
+BOARD_DIR="$(dirname $0)"
+GENIMAGE_CFG="${BOARD_DIR}/sd-image.cfg"
+GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
+
+$MKIMAGE -n rk3288 -T rksd -d $BINARIES_DIR/u-boot-spl-dtb.bin $BINARIES_DIR/u-boot-spl-dtb.img
+
+rm -rf "${GENIMAGE_TMP}"
+
+genimage							\
+	--rootpath "${TARGET_DIR}"		\
+	--tmppath "${GENIMAGE_TMP}"		\
+	--inputpath "${BINARIES_DIR}"	\
+	--outputpath "${BINARIES_DIR}"	\
+	--config "${GENIMAGE_CFG}"
+
+exit $?

bsp/buildroot/board/firefly/firefly-rk3288/readme.txt

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+Firefly RK3288
+
+How to build it
+===============
+
+  $ make firefly_rk3288_defconfig
+
+Then you can edit the build options using
+
+  $ make menuconfig
+
+Compile all and build rootfs image:
+
+  $ make
+
+Result of the build
+-------------------
+
+After building, you should get a tree like this:
+
+  output/images/
+  ├── rk3288-firefly.dtb
+  ├── rootfs.ext2
+  ├── rootfs.ext4 -> rootfs.ext2
+  ├── sdcard.img
+  ├── u-boot-dtb.img
+  ├── u-boot-spl-dtb.bin
+  ├── u-boot-spl-dtb.img
+  └── uImage
+
+Prepare your SDCard
+===================
+
+Buildroot generates a ready-to-use SD card image that you can flash directly to
+the card. The image will be in output/images/sdcard.img.
+You can write this image directly to an SD card device (i.e. /dev/xxx):
+
+  $ dd if=output/images/sdcard.img of=/dev/xxx
+
+Finally, you can insert the SD card to the Firefly RK3288 board and boot it.

bsp/buildroot/board/firefly/firefly-rk3288/sd-image.cfg

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+image sdcard.img {
+  hdimage {
+  }
+
+  partition u-boot-spl-dtb {
+    in-partition-table = "no"
+    image = "u-boot-spl-dtb.img"
+    offset = 32K
+  }
+
+  partition u-boot-dtb {
+    in-partition-table = "no"
+    image = "u-boot-dtb.img"
+    offset = 128K
+  }
+
+  partition rootfs {
+    partition-type = 0x83
+    image = "rootfs.ext4"
+    size = 512M
+  }
+}