LinuxKPI based WiFi drivers: scripts to extract fwget(8) and port details

Add a "zzz_fw_ports_fwget.sh" script to each LinuxKPI based wireless
driver which in essential are all the same and in detail all different.
They extract information for fwget(8), wifi-firmware-* ports, man pages
and for iwlwififw also for the wiki.

Sponsored by: The FreeBSD Foundation
Suggested by: imp (to have automation in D44918)

(cherry picked from commit 96190b4fef3b4a0cc3ca0606b0c4e3e69a5e6717)