arm/PCI: remove arch pci_flags definition

The PCI core provides a pci_flags definition (currently __weak), so drop
the arm definition in favor of that.

We EXPORT_SYMBOL(pci_flags) as arm did previously. I'm dubious about
this: no other architecture exports it, and I didn't see any modules in
the tree that reference it.

CC: Rob Herring <[e-mail]>
CC: Russell King <[e-mail]>
CC: [e-mail]
Signed-off-by: Bjorn Helgaas <[e-mail]>

arch/arm/kernel/bios32.c

···
 
 	INIT_LIST_HEAD(&hw->buses);
 
+	pci_add_flags(PCI_REASSIGN_ALL_RSRC);
 	if (hw->preinit)
 		hw->preinit();
 	pcibios_init_hw(hw);
···
 		pci_bus_add_devices(bus);
 	}
 }
+EXPORT_SYMBOL(pci_flags);
 
 #ifndef CONFIG_PCI_HOST_ITE8152
 void pcibios_set_master(struct pci_dev *dev)

arch/arm/mm/iomap.c

···
 unsigned long pcibios_min_mem = 0x01000000;
 EXPORT_SYMBOL(pcibios_min_mem);
 
-unsigned int pci_flags = PCI_REASSIGN_ALL_RSRC;
-EXPORT_SYMBOL(pci_flags);
-
 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 {
 	if ((unsigned long)addr >= VMALLOC_START &&