mac80211_hwsim: Fix a typo in the name of function 'mac80211_hswim_he_capab()'

This function name should be 'mac80211_hwsim_he_capab()' (s wand w
switched) to be consistent with the rest of the file.
Fix and use it.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20190725191328.18010-1-christophe.jaillet@wanadoo.fr


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