[PATCH 3/7] net: ethernet: bgmac: move BCMA MDIO Phy code into a separate file

Move the BCMA MDIO phy into a separate file, as it is very tightly coupled with the BCMA bus. This will help with the upcoming BCMA removal from the bgmac driver. Optimally, this should be moved into phy drivers, but it is too tightly coupled with the bgmac driver to effectively move it without

[PATCH 3/7] net: ethernet: bgmac: move BCMA MDIO Phy code into a separate file

Move the BCMA MDIO phy into a separate file, as it is very tightly coupled with the BCMA bus. This will help with the upcoming BCMA removal from the bgmac driver. Optimally, this should be moved into phy drivers, but it is too tightly coupled with the bgmac driver to effectively move it without