Marvell Amethyst switches use a different SMI GPIO pin setup than other
switches, and since RB5009 uses Amethyst switch and its SMI bus to talk
to QCA8081 lets backport the required fix from kernel 6.9.
Link: https://github.com/openwrt/openwrt/pull/15765
Signed-off-by: Robert Marko <robimarko@gmail.com>
