linux-phytec-fsl

cfg80211: check no-OFDM flag for channels wider than 20 MHz

For channels wider than 20 MHz OFDM will be used, so when
checking whether or not a channel is usable, check for the
no-OFDM flag if the channel is wider than 20 MHz.

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