lldpd: fix log_info

Currently none of the log_info msgs are getting
printed into syslog. vlog already does the right checks.
Remove the checks in log_info which is making all default log_info
prints no-ops

Also change severity of "interface reset timer" msg

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Sam Tannous <stannous@cumulusnetworks.com>
log: info messages should be logged on syslog but not on first debug level

Without `-d`, syslog should log info messages. With `-d`, they should
not be displayed. With `-dd`, they should be displayed. This is an
amendment of the previous patch.