The function was using phydev.name (e.g., "phy0.0") instead of
phydev.phy (e.g., "phy0") when calling wpa_supplicant.phy_set_macaddr_list.
This is inconsistent with all other wpa_supplicant ubus calls in the same
file which correctly use phydev.phy.
Reported-by: Michael-cy Lee (李峻宇) <Michael-cy.Lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>