mac80211: add parse regulatory info in 6 GHz operation information

This patch is to convert the regulatory info subfield in HE operation
element to power type and save in struct cfg80211_chan_def.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/20210924100052.32029-3-wgong@codeaurora.org


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