net: renesas: rswitch: Add host_interfaces setting

Set phydev->host_interfaces before calling of_phy_connect() to
configure the PHY with the information of host_interfaces.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>