dbus: Fix pid file in dbus init script

dbus: Fix pid file in dbus init script

The PIDFILE (/var/run/dbus/pid) referenced by /etc/init.d/dbus-1 did
not match the path (/var/run/messagebus.pid) configured in
/etc/dbus-1/system.conf, so the initscript could start the daemon, but
not stop it.  Also remove needless directory ownership logic
(dbus-daemon drops its pid file as root before calling setuid).

(From OE-Core rev: 23cfbff5611c2ed52eedfaa99b1d6eccd326f035)

Signed-off-by: Andy Ross <andy.ross@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>