xserver-nodm-init: Respawn service in case of failure
It appears that sometimes xserver-nodm.service is starting before
display driver finished loading causing the following failure in
Xorg log:
(EE) open /dev/dri/card0: No such file or directory
The introduced by this patch is to restart the service,
hopefully the display driver will finish loading.
Signed-off-by: Ramon Fried <rfried@codeaurora.org> Signed-off-by: Ross Burton <ross.burton@intel.com>
