Move buildroot to bsp directory.

bsp/buildroot/board/olimex/a20_olinuxino/post-build.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+# args from BR2_ROOTFS_POST_SCRIPT_ARGS
+# $2    path of boot.cmd
+# $3    output directory for boot.scr
+
+MKIMAGE=$HOST_DIR/usr/bin/mkimage
+
+$MKIMAGE -A arm -O linux -T script -C none -d $2 $3/boot.scr
+
+if [ -e $BINARIES_DIR/script.bin ]; then
+	cp $BINARIES_DIR/script.bin $3/script.bin
+fi