Update buidlroot to version 2016.08.1

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

@@ -1,2 +1,12 @@
 #!/bin/sh
-cp board/minnowboard/grub.cfg ${BINARIES_DIR}/efi-part/EFI/BOOT/grub.cfg
+# args from BR2_ROOTFS_POST_SCRIPT_ARGS
+# $2    board name
+
+cp -v board/minnowboard/grub-${2}.cfg ${BINARIES_DIR}/efi-part/EFI/BOOT/grub.cfg
+
+# Add a console on tty1
+if [ -e ${TARGET_DIR}/etc/inittab ]; then
+    grep -qE '^tty1::' ${TARGET_DIR}/etc/inittab || \
+	sed -i '/GENERIC_SERIAL/a\
+tty1::respawn:/sbin/getty -L  tty1 0 vt100 # HDMI console' ${TARGET_DIR}/etc/inittab
+fi