Bringing up a mesh interface using wpa_supplicant already supports a
per-VIF basic rate selection. Add the same ability when creating a mesh
VIF without wpa_supplicant.
Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 3deeb7805f69f54b9ab20c0e12f8dd916fec4de1)