[syncd.sh] 'sxdkernel start' => 'sxdkernel restart' (#11718)

Change `sxdkernel start` to `sxdkernel restart`. If `syncd` service crashes in `ExecStartPre` systemd will not call `ExecStop` and thus will not call `sxdkernel stop`. Use of `sxdkernel restart` is more robust in terms of guarantees to restore the system after unexpected crashes.

Signed-off-by: Stepan Blyschak <stepanb@nvidia.com>

Signed-off-by: Stepan Blyschak <stepanb@nvidia.com>

files/scripts/syncd.sh

@@ -24,7 +24,7 @@ function startplatform() {
         debug "Starting Firmware update procedure"
         /usr/bin/mst start --with_i2cdev
         /usr/bin/mlnx-fw-upgrade.sh
-        /etc/init.d/sxdkernel start
+        /etc/init.d/sxdkernel restart
         debug "Firmware update procedure ended"
     fi