[PATCH net] mdio: mux: fix parsing mux registers outside of the PHY address range

[Andrew Lunn]

> To be clear, are you suggesting that we add an additional property to
> of_mdio_parse_addr() that specifies the limit to check against, or
> remove the check and add it to each additional caller?

Hi Jon

Probably the simplest is to add an extra parameter to mdio_mux_init()
which is the maximum allowed reg value.

We should not touch of_mdio_parse_addr(). reg is not an mdio
address. It is a count of gpios, or a value to be poked into an
register.

      Andrew