PCI: keystone: Prefer of_device_get_match_data()

The keystone driver only needs the device data, not the whole struct
of_device_id.  Use of_device_get_match_data() instead of of_match_device().
No functional change intended.

[bhelgaas: commit log]
Link: https://lore.kernel.org/r/20211223011054.1227810-7-helgaas@kernel.orgSigned-off-by: Fan Fei <ffclaire1224@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>

drivers/pci/controller/dwc/pci-keystone.c

@@ -1087,7 +1087,6 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	const struct ks_pcie_of_data *data;
-	const struct of_device_id *match;
 	enum dw_pcie_device_mode mode;
 	struct dw_pcie *pci;
 	struct keystone_pcie *ks_pcie;
@@ -1104,8 +1103,7 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
 	int irq;
 	int i;
 
-	match = of_match_device(of_match_ptr(ks_pcie_of_match), dev);
-	data = (struct ks_pcie_of_data *)match->data;
+	data = of_device_get_match_data(dev);
 	if (!data)
 		return -EINVAL;