Merge branch 'ipq-mdio'

Luo Jie says:

====================
net: mdio: Add IPQ MDIO reset related function

This patch series add the MDIO reset features, which includes
configuring MDIO clock source frequency and indicating CMN_PLL that
ethernet LDO has been ready, this ethernet LDO is dedicated in the
IPQ5018 platform.

Specify more chipset IPQ40xx, IPQ807x, IPQ60xx and IPQ50xx supported by
this MDIO driver.

Changes in v3:
	* simplify the function ipq_mdio_reset.

Changes in v2:
	* Addressed review comments (Andrew Lunn).
	* Remove the IS_ERR().
	* make binding patch part of series.
	* document the property 'reg' and 'clock'.

Changes in v1:
	* make MDIO_IPQ4019 unchanged for backwards compatibility.
	* remove the PHY reset functions
====================

Signed-off-by: David S. Miller <davem@davemloft.net>