[chassis] Do not configure LLDP on recirc ports (#7909)

Why I did it
Recirc port is used to only forward traffic from one asic to another asic. So it's not required to configure LLDP on it.

How I did it
Add interface prefix helper for recirc port. Similar to skip configuring LLDP on inband port, add check in lldpmgrd to skip recirc port by checking interface prefix.

dockers/docker-lldp/lldpmgrd

@@ -22,7 +22,7 @@ try:
 
     from sonic_py_common import daemon_base
     from swsscommon import swsscommon
-    from sonic_py_common.interface import inband_prefix
+    from sonic_py_common.interface import inband_prefix, recirc_prefix
 except ImportError as err:
     raise ImportError("%s - required module not found" % str(err))
 
@@ -133,9 +133,9 @@ class LldpManager(daemon_base.DaemonBase):
         """
         port_desc = None
 
-        # Skip inband interface prefixes. These are recycle ports exposed in PORT_TABLE for
+        # Skip recirc and inband interface prefixes. These are recycle ports exposed in PORT_TABLE for
         # asic-to-asic communication in VOQ based chassis system. We do not configure LLDP on these.
-        if port_name.startswith(inband_prefix()):
+        if port_name.startswith(inband_prefix()) or port_name.startswith(recirc_prefix()):
             return
 
         # Get the port alias. If None or empty string, use port name instead