Support for platforms based on Clounix net device (sonic-net#3970)

What I did
Add support for platforms based on Clounix net device

How I did it
Add support for platforms based on Clounix net device

How to verify it
Verified on physical DUT

Signed-off-by: Qinghua Song <[email protected]>
Signed-off-by: Long Wu <[email protected]>

Author: longwu-clounix

scripts/fast-reboot

@@ -942,6 +942,11 @@ then
   systemctl stop "$service_name"
 fi
 
+if [[ "$sonic_asic_type" = 'clounix' ]];
+then
+  systemctl stop clx-modules.service || debug "Ignore stopping clounix service error $?"
+fi
+
 # Update the reboot cause file to reflect that user issued this script
 # Upon next boot, the contents of this file will be used to determine the
 # cause of the previous reboot