For certain lldp_class scenarios (2 & 3) a policy must be set also.
Class 4 is default, although it's good to handle the policy eventuality.
Here, set a default lldp_policy for all lldp_class scenarios. Any
lldp_policy can now be set.
Depends on PR #14584 (which introduced an `if` block)
Tested on 22.03.5, 22.03.6
Signed-off-by: Paul Donald <newtwen@gmail.com>
(cherry picked from commit 497fafb8ae)
Link: https://github.com/openwrt/openwrt/pull/15299
Signed-off-by: Robert Marko <robimarko@gmail.com>