net: miiphybb: Pass struct bb_miiphy_bus_ops directly to bb_miiphy_read/write()

net: miiphybb: Pass struct bb_miiphy_bus_ops directly to bb_miiphy_read/write()

The access to struct bb_miiphy_bus_ops via ops pointer in
struct bb_miiphy_bus is not necessary with wrappers added
in previous patch. Pass the ops pointer directly to both
bb_miiphy_read() and bb_miiphy_write() functions.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Paul Barker <paul.barker.ct@bp.renesas.com>