ath11k-firmware: add wifi firmware for QCN6122
Add ability to download and package ath11k firmware for QCN6122.
QCN6122 is specific/exclusive to the IPQ5018 platform and firmware
files are publishes in a subdirectory of the IPQ5018 firmware files.
While at it, add support for packaging BDFs for QCN6122 wifi and
update iwinfo to recognize QCN6122 wifi.
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
Link: https://github.com/openwrt/openwrt/pull/17182
Signed-off-by: Robert Marko <robimarko@gmail.com>