997acc7f86 split this PHY driver up such
that external QCA switches now use CONFIG_QCA83XX_PHY. Fix it here so
that ethernet works again.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16154
Signed-off-by: Robert Marko <robimarko@gmail.com>