The basic -lite image installs the following (and more) packages:
wpasupplicant wireless-tools firmware-atheros firmware-brcm80211 firmware-libertas firmware-misc-nonfree firmware-realtek
Where can I find what HW drivers these packages contain and which package is needed for which model of RPi? I'm trying to strip down my image a bit to fit it in a 4GB mender.io A/B image that is only going to be used w/o most RPi HW (like display/GPU/camera/wifi). Possibly going to use BLE.
Update (for 3B+ and 4B): It seems at first glance that atheros, libertas and realtek are Wifi drivers not used in 3B+ or 4B. The firmware-brcm80211 seems to be Wifi/BLE CYW43455 drivers. firmware-misc-nonfree: Misc fw binaries, not sure if needed.
Will try to build an image with only brcm80211 and hope that is enough for 3B+ and 4B devices.