net/asterisk18: Add red_geolocation support

Add a GEOLOCATION option (off by default) to allow building the new
res_geolocation module, which allows to use geolocation information
in SIP protocol (upstream provider support required).

Since it requires architecture specific flags to be passed to ld,
I've enabled it only for tier 1 architectures at present.

PR: 266053
Tested by: Seneca Cunningham <seneca@vybenetworks.com>