Refreshing the patches for fff07085fb moved the b53_adjust_63xx_rgmii() call
from b53_phylink_mac_link_up() to b53_phylink_mac_link_down().
In order to properly configure the RGMII ports we need to restore it to its
correct place.
Fixes: fff07085fb ("kernel: add pending bmips patches")
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>