wifi: cfg80211: report per wiphy radio antenna mask

With multi-radio devices, each radio typically gets a fixed set of antennas.
In order to be able to disable specific antennas for some radios, user space
needs to know which antenna mask bits are assigned to which radio.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/e0a26afa2c88eaa188ec96ec6d17ecac4e827641.1728462320.git-series.nbd@nbd.name


Signed-off-by: Johannes Berg <johannes.berg@intel.com>