Add /etc/samba/smbpasswd to list of samba conffiles
thus preserving samba passwords across sysupgrade
by default.

Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@46606 3c298f89-4303-0410-b956-a3cf2f4a3e73