instead of failing when authsae is not installed, also try using
wpa_supplicant as the newly added -mesh variants support mesh mode
and SAE encryption.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45520 3c298f89-4303-0410-b956-a3cf2f4a3e73