linux-phytec-ti

cfg80211: improve warnings in VHT rate calculation

Linus reported hitting the bandwidth warning, but it is indeed
pretty useless - improve it by printing the rate configuration
and make it only warn once, for both warnings here.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>