when execute the command "/etc/init.d/acpid stop" and "/etc/init.d/acpid
restart", it prompt "no /usr/sbin/acpid found;none killed",The acpid could
not be restarted because the script start with "!/bin/sh –e", that will
make the script stop when an error occurred. So when no 'acpid' running
(we have stopped it), the script would exit and 'restart' operation would
be stopped by ‘stop’ operation.so avoiding the error occurred, add "-o"
option,exit status 0 (not 1)if nothing done.

(From OE-Core rev: b7a8daf52c9befc773f320e54999bb91efdac334)

Signed-off-by: Baogen Shang <baogen.shang@windriver.com>
Signed-off-by: Jeff Polk <jeff.polk@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>