Update buidlroot to version 2016.08.1

bsp/buildroot/board/minnowboard/post-image.sh

@@ -0,0 +1,13 @@
+#!/bin/sh -e
+
+GENIMAGE_CFG="board/minnowboard/genimage.cfg"
+GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
+
+rm -rf "${GENIMAGE_TMP}"
+
+genimage \
+    --rootpath "${TARGET_DIR}" \
+    --tmppath "${GENIMAGE_TMP}" \
+    --inputpath "${BINARIES_DIR}" \
+    --outputpath "${BINARIES_DIR}" \
+    --config "${GENIMAGE_CFG}"