ARM: Fix section mismatch warning in Integrator pci_v3

WARNING: vmlinux.o(.text+0xc9d4): Section mismatch in reference from the function pci_v3_scan_bus() to the function .devinit.text:pci_scan_bus_parented()
The function pci_v3_scan_bus() references
the function __devinit pci_scan_bus_parented().
This is often because pci_v3_scan_bus lacks a __devinit
annotation or the annotation of pci_scan_bus_parented is wrong.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Acked-by: NSam Ravnborg <sam@ravnborg.org>

arch/arm/mach-integrator/pci_v3.c

@@ -486,7 +486,7 @@ int __init pci_v3_setup(int nr, struct pci_sys_data *sys)
 	return ret;
 }
 
-struct pci_bus *pci_v3_scan_bus(int nr, struct pci_sys_data *sys)
+struct pci_bus * __init pci_v3_scan_bus(int nr, struct pci_sys_data *sys)
 {
 	return pci_scan_bus(sys->busnr, &pci_v3_ops, sys);
 }