net: bcmgenet: Don't set ID_MODE_DIS when not using RGMII

As per Linux's driver, ID_MODE_DIS is only set when the PHY interface is
RGMII. Don't enable it for the rest of setups.

This has been seen to misconfigure RPi4's PHY when booting Linux.
Signed-off-by: NNicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NMatthias Brugger <mbrugger@suse.com>

drivers/net/bcmgenet.c

@@ -448,7 +448,10 @@ static int bcmgenet_adjust_link(struct bcmgenet_eth_priv *priv)
 	}
 
 	clrsetbits_32(priv->mac_reg + EXT_RGMII_OOB_CTRL, OOB_DISABLE,
-			RGMII_LINK | RGMII_MODE_EN | ID_MODE_DIS);
+			RGMII_LINK | RGMII_MODE_EN);
+
+	if (phy_dev->interface == PHY_INTERFACE_MODE_RGMII)
+		setbits_32(priv->mac_reg + EXT_RGMII_OOB_CTRL, ID_MODE_DIS);
 
 	writel(speed << CMD_SPEED_SHIFT, (priv->mac_reg + UMAC_CMD));