base-files: Override jffs2reset from fstools package
jffs2reset is called by some OpenWrt scripts. Put our own implementation that we already had in the firstboot script in a /sbin/jffs2reset script which overrides the binary from the fstools packages. This does not create a conflict, because we are doing it from the base-files package.
Restore the firstboot script to its original OpenWrt form (it just calls jffs2reset).
Signed-off-by: Andreas Gnau andreas.gnau@iopsys.eu