PCI: mediatek: Remove un-used variant in struct mtk_pcie_port

The "lane" variant in struct mtk_pcie_port is not used, remove it.

Signed-off-by: Honghui Zhang <[e-mail]>
Signed-off-by: Lorenzo Pieralisi <[e-mail]>

drivers/pci/controller/pcie-mediatek.c

···
  * @obff_ck: pointer to OBFF functional block operating clock
  * @pipe_ck: pointer to LTSSM and PHY/MAC layer operating clock
  * @phy: pointer to PHY control block
- * @lane: lane count
  * @slot: port slot
  * @irq: GIC irq
  * @irq_domain: legacy INTx IRQ domain
···
 	struct clk *obff_ck;
 	struct clk *pipe_ck;
 	struct phy *phy;
-	u32 lane;
 	u32 slot;
 	int irq;
 	struct irq_domain *irq_domain;
···
 	port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
 	if (!port)
 		return -ENOMEM;
-
-	err = of_property_read_u32(node, "num-lanes", &port->lane);
-	if (err) {
-		dev_err(dev, "missing num-lanes property\n");
-		return err;
-	}
 
 	snprintf(name, sizeof(name), "port%d", slot);
 	regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);