pf: selecting pf_map_addr is not an error

When a redirection/nat IP address is selected by pf_map_addr it is
logged with PF_DEBUG_MISC level. This one according to the manual means
"Generate debug messages for various errors". Selecting an IP address is
not an error, it's a normal function of pf for route-to, nat and some
other operations. Therefore PF_DEBUG_NOISY level should be choosen which
is means "Generate debug messages for common conditions".

PR: 259184
Submitted by: Kajetan Staszkiewicz <vegeta tuxpowered.net>
Sponsored by: InnoGames GmbH