PCI: designware: Remove PCI_PROBE_ONLY handling

The PCIe designware host driver is not used in system configurations
requiring the PCI_PROBE_ONLY flag to be set to prevent resources
assignment, therefore the driver code handling the flag can be removed
from the kernel.

Signed-off-by: Lorenzo Pieralisi <[e-mail]>
Signed-off-by: Bjorn Helgaas <[e-mail]>
Acked-by: Pratyush Anand <[e-mail]>
Acked-by: Jingoo Han Jingoo Han <[e-mail]>
Cc: Arnd Bergmann <[e-mail]>
Cc: Gabriele Paoloni <[e-mail]>
Cc: Zhou Wang <[e-mail]>

drivers/pci/host/pcie-designware.c

···
 	pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci);
 #endif
 
-	if (!pci_has_flag(PCI_PROBE_ONLY)) {
-		pci_bus_size_bridges(bus);
-		pci_bus_assign_resources(bus);
+	pci_bus_size_bridges(bus);
+	pci_bus_assign_resources(bus);
 
-		list_for_each_entry(child, &bus->children, node)
-			pcie_bus_configure_settings(child);
-	}
+	list_for_each_entry(child, &bus->children, node)
+		pcie_bus_configure_settings(child);
 
 	pci_bus_add_devices(bus);
 	return 0;