This patch updates the qca8k's binding to document to the
approach for using the internal mdio-bus of the supported
qca8k switches.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NChristian Lamparter <chunkeey@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>