Revert "net: bcmgenet: Workaround #2 for Pi4 Ethernet fail"

This reverts commit dfad8d6.

Author: nbuchwitz

drivers/net/ethernet/broadcom/genet/bcmgenet.c

@@ -65,9 +65,6 @@
 
 /* Forward declarations */
 static void bcmgenet_set_rx_mode(struct net_device *dev);
-static bool skip_umac_reset = true;
-module_param(skip_umac_reset, bool, 0444);
-MODULE_PARM_DESC(skip_umac_reset, "Skip UMAC reset step");
 
 static inline void bcmgenet_writel(u32 value, void __iomem *offset)
 {
@@ -2562,11 +2559,6 @@ static void reset_umac(struct bcmgenet_priv *priv)
 	bcmgenet_rbuf_ctrl_set(priv, 0);
 	udelay(10);
 
-	if (skip_umac_reset) {
-		pr_warn("Skipping UMAC reset\n");
-		return;
-	}
-
 	/* issue soft reset and disable MAC while updating its registers */
 	spin_lock_bh(&priv->reg_lock);
 	bcmgenet_umac_writel(priv, CMD_SW_RESET, UMAC_CMD);