sunxi: don't copy DTS files to BIN_DIR

The DTS files aren't useful (other targets don't copy them either) and
clutter BIN_DIR with files unrelated to the chosen profile.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>



git-svn-id: svn://svn.openwrt.org/openwrt/trunk@46604 3c298f89-4303-0410-b956-a3cf2f4a3e73