mx8qxp-var-som, imx8qm-var-som: Disable wifi service stop

This fixes WIFI driver crashes during reboot and poweroff on VAR-SOM-MX8
and VAR-SOM-MX8X.

Stopping WIFI is still possible by running "/etc/wifi/variscite-wifi stop"

Relevant Yocto changes

varigit/meta-variscite-imx@4cc13ed

Signed-off-by: Harshesh Valera <harshesh.v@variscite.com>

variscite/variscite-wifi.service

@@ -5,9 +5,9 @@ After=sysinit.target
 
 [Service]
 Type=oneshot
-RemainAfterExit=yes
+#RemainAfterExit=yes
 ExecStart=/etc/wifi/variscite-wifi start
-ExecStop=/etc/wifi/variscite-wifi stop
+#ExecStop=/etc/wifi/variscite-wifi stop
 
 [Install]
 WantedBy=network.target