arm/PCI: don't export pci_flags

There's no need to export pci_flags; it's not exported by any other
architecture, and no modules reference it.

CC: Rob Herring <rob.herring@calxeda.com>
CC: Russell King <linux@arm.linux.org.uk>
CC: linux-arm-kernel@lists.infradead.org
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>

arch/arm/kernel/bios32.c

@@ -498,7 +498,6 @@ void __init pci_common_init(struct hw_pci *hw)
 		pci_bus_add_devices(bus);
 	}
 }
-EXPORT_SYMBOL(pci_flags);
 
 #ifndef CONFIG_PCI_HOST_ITE8152
 void pcibios_set_master(struct pci_dev *dev)