wifi: ath6kl: remove WARN on bad firmware input

[ Upstream commit e7417421d89358da071fd2930f91e67c7128fbff ]

If the firmware gives bad input, that's nothing to do with
the driver's stack at this point etc., so the WARN_ON()
doesn't add any value. Additionally, this is one of the
top syzbot reports now. Just print a message, and as an
added bonus, print the sizes too.

Reported-by:  <syzbot+92c6dd14aaa230be6855@syzkaller.appspotmail.com>
Tested-by:  <syzbot+92c6dd14aaa230be6855@syzkaller.appspotmail.com>
Acked-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Link: https://patch.msgid.link/20250617114529.031a677a348e.I58bf1eb4ac16a82c546725ff010f3f0d2b0cca49@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>