Add a page for wifi to document firmwares removal

Some wifi-firmwares will be split into sub-packages in fedora 40
We will keep them in until fedora 41, but display a warning message
in the console. This messages links to this FAQ entry.

See  coreos/fedora-coreos-config#2963
See  coreos/fedora-coreos-tracker#1575

modules/ROOT/nav.adoc

@@ -43,6 +43,7 @@
 ** xref:time-zone.adoc[Configuring Time Zone]
 ** xref:grub-password.adoc[Setting a GRUB password]
 ** xref:audit.adoc[Managing the audit daemon]
+** xref:wifi.adoc[Wi-Fi Network configuration]
 * OS updates
 ** xref:update-streams.adoc[Update Streams]
 ** xref:auto-updates.adoc[Auto-Updates]

modules/ROOT/pages/wifi.adoc

@@ -0,0 +1,48 @@
+
+== How do I add the missing wifi-firmwares?
+
+Some wifi-firmwares will be split into sub-packages in Fedora 39 and Fedora 40.
+Fedora Cores OS will keep them in until Fedora 41, but display a
+warning message in the console if NetworkManager-wifi is layered without
+any other wifi firmware packages having a layering request.
+
+If NetworkManager-wifi is a requested layered package, a warning is
+displayed to encourage users to also add a wifi-firmware.
+
+.Install thre required firmware for your hardware:
+[source, text]
+----
+$ sudo rpm-ostree install iwlwifi-dvm-firmware --allow-inactive
+----
+
+If you don't know what firmware to install you can install
+all the wireless firmwares available in Fedora.
+Please note this approach is un-optimal as it will add a lot
+of uneeded packages on your system.
+.Install all the wifi firmwares
+----
+$ sudo rpm-ostree install --allow-inactive \
+atheros-firmware \
+b43-fwcutter \
+b43-openfwwf \
+brcmfmac-firmware \
+iwlegacy-firmware \
+iwlwifi-dvm-firmware \
+iwlwifi-mvm-firmware \
+libertas-firmware \
+mt7xxx-firmware \
+nxpwireless-firmware \
+realtek-firmware \
+tiwilink-firmware \
+atmel-firmware \
+bcm283x-firmware \
+zd1211-firmware
+----
+
+You can now disable the warning with:
+[source, text]
+----
+sudo systemctl disable coreos-check-wireless-firmwares.service
+----
+
+Then reboot the system.