net: phy: fixed_phy: simplify fixed_mdio_read

swphy_read_reg() doesn't change the passed struct fixed_phy_status,
so we can pass &fp->status directly.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Link: https://patch.msgid.link/c49195c7-a3a1-485c-baed-9b33740752de@gmail.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>