[RFC 22/22] net: phy: micrel: use generic config_init for KSZ8021/KSZ8031

Use generic config_init callback also for KSZ8021 and KSZ8031. This has been avoided this far due to commit a95a18afe4c8 ("phy/micrel: KSZ8031RNL RMII clock reconfiguration bug"), which claims that the PHY becomes unresponsive if the broadcast disable flag is set before configuring the clock

[RFC 22/22] net: phy: micrel: use generic config_init for KSZ8021/KSZ8031

Use generic config_init callback also for KSZ8021 and KSZ8031. This has been avoided this far due to commit a95a18afe4c8 (phy/micrel: KSZ8031RNL RMII clock reconfiguration bug), which claims that the PHY becomes unresponsive if the broadcast disable flag is set before configuring the clock mode.