irda-utils: restart irda daemon correctly

irda-utils: restart irda daemon correctly

irattach init script restart faulty logic prevents irda daemon
from restart correctly.

root@qemu0:~# /etc/init.d/irattach restart
Restarting IrDA: Terminated
root@qemu0:~# ps aux | grep irattach
root       541  0.0  0.2   2400   612 ttyS0    S+   09:05   0:00 grep irattach

As above shows, irattach not started after executing restart command.
This commit changed the restart command logic: firstly stop, then
start.
Prompt telling user irattach start successfully or failure also
added.

Signed-off-by: Qiang Chen <qiang.chen@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>