PCI: dwc-plat: Drop dw_plat_pcie_of_match[] forward declaration

The dw_plat_pcie_of_match[] forward declaration was required when
dw_plat_pcie_probe() called of_match_device(). 5c204204cf24 ("PCI:
designware-plat: Prefer of_device_get_match_data()") replaced that with
of_device_get_match_data(), which no longer needs the declaration.

Drop the unnecessary forward declaration.

[bhelgaas: commit log]
Link: https://lore.kernel.org/r/[e-mail]
Tested-by: Manivannan Sadhasivam <[e-mail]>
Signed-off-by: Serge Semin <[e-mail]>
Signed-off-by: Bjorn Helgaas <[e-mail]>
Reviewed-by: Manivannan Sadhasivam <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>

drivers/pci/controller/dwc/pcie-designware-plat.c

···
 	enum dw_pcie_device_mode	mode;
 };
 
-static const struct of_device_id dw_plat_pcie_of_match[];
-
 static const struct dw_pcie_host_ops dw_plat_pcie_host_ops = {
 };