The PHYLIB must be selected to provide mdiobus_*() functions, and the
MICREL_PHY is necessary too, as that is the only possible PHY attached
to the KS8851 (it is the internal PHY).

Fixes: ef3631220d2b ("net: ks8851: Register MDIO bus and the internal PHY")
Signed-off-by: Marek Vasut <ma...@denx.de>
Cc: Andrew Lunn <and...@lunn.ch>
Cc: Heiner Kallweit <hkallwe...@gmail.com>
Cc: Lukas Wunner <lu...@wunner.de>
---
 drivers/net/ethernet/micrel/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/micrel/Kconfig 
b/drivers/net/ethernet/micrel/Kconfig
index 42bc014136fe..93df3049cdc0 100644
--- a/drivers/net/ethernet/micrel/Kconfig
+++ b/drivers/net/ethernet/micrel/Kconfig
@@ -31,6 +31,8 @@ config KS8851
        select MII
        select CRC32
        select EEPROM_93CX6
+       select PHYLIB
+       select MICREL_PHY
        help
          SPI driver for Micrel KS8851 SPI attached network chip.
 
@@ -40,6 +42,8 @@ config KS8851_MLL
        select MII
        select CRC32
        select EEPROM_93CX6
+       select PHYLIB
+       select MICREL_PHY
        help
          This platform driver is for Micrel KS8851 Address/data bus
          multiplexed network chip.
-- 
2.29.2

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