samba: fix error messages when startup samba service
samba: fix error messages when startup samba service

Issue: LIN7-1340

This solves the following error messages when startup samba:

  Unable to open new log file '/var/log/samba/log.smbd': No such file or directory

(LOCAL REV: NOT UPSTREAM) -- Sent to meta-oe on 20141030

Signed-off-by: Chong Lu <a184fd94204b33e92041f8bdf4cc18886c495134@windriver.com>
Signed-off-by: Robert Yang <58c339bb2d6e36747c1485f8911298e2be82d9f6@windriver.com>

WindRiver-OpenSourceLabs/meta-oe-subset,WindRiver-OpenSourceLabs/meta-oe-subset