powerpc/pci: Fix annotation of pcibios_claim_one_bus

It was __devinit, but it is also within a CONFIG_HOTPLUG guarded section
of code, so the __devinit does nothing but cause the following warning:

WARNING: vmlinux.o(.text+0x107a8): Section mismatch in reference from the function pcibios_finish_adding_to_bus() to the function .devinit.text:pcibios_claim_one_bus()
The function pcibios_finish_adding_to_bus() references
the function __devinit pcibios_claim_one_bus().
This is often because pcibios_finish_adding_to_bus lacks a __devinit
annotation or the annotation of pcibios_claim_one_bus is wrong.

It is also only (externally) used in arch/powerpc/kernel/of_platform.c
which cannot be built as a module so don't export it.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/kernel/pci-common.c

@@ -1505,7 +1505,7 @@ void __init pcibios_resource_survey(void)
  * rest of the code later, for now, keep it as-is as our main
  * resource allocation function doesn't deal with sub-trees yet.
  */
-void __devinit pcibios_claim_one_bus(struct pci_bus *bus)
+void pcibios_claim_one_bus(struct pci_bus *bus)
 {
 	struct pci_dev *dev;
 	struct pci_bus *child_bus;
@@ -1533,7 +1533,6 @@ void __devinit pcibios_claim_one_bus(struct pci_bus *bus)
 	list_for_each_entry(child_bus, &bus->children, node)
 		pcibios_claim_one_bus(child_bus);
 }
-EXPORT_SYMBOL_GPL(pcibios_claim_one_bus);
 
 
 /* pcibios_finish_adding_to_bus