The emac include MDIO controller, and the motherboard has more than one
PHY connected to an MDIO bus. So share the shared mii_bus for others MAC
device that not has MDIO bus connected.

Based on ACPI, since "phy-handle" cannot directly point to a _DSD
sub-package, so we use "phy-handle" to point an internal MDIO device port.
The port describes the phy address.

Tested: QDF2400 (ACPI), buildin/insmod/rmmod

V3:
 - Add "phy-handle" support.
 - Remove all of DT changes.

V2:
 - Separate patch.

Wang Dongsheng (2):
  net: qcom/emac: split phy_config to mdio bus create and get phy device
  net: qcom/emac: add phy-handle support for ACPI

 drivers/net/ethernet/qualcomm/emac/emac-phy.c | 183 ++++++++++++++----
 1 file changed, 142 insertions(+), 41 deletions(-)

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2.18.0