m68k/PCI: Remove redundant call of pci_bus_add_devices()

pci_scan_bus() has called pci_bus_add_devices() already, so remove the
redundant call of pci_bus_add_devices(). subsys_init() callbacks will be
invoked before device_init() callbacks, so it should be safe to remove the
redundant calls.

[bhelgaas: split unicore32 into a separate patch]
Signed-off-by: Jiang Liu <[e-mail]>
Signed-off-by: Bjorn Helgaas <[e-mail]>
Acked-by: Greg Ungerer <[e-mail]>

arch/m68k/platform/coldfire/pci.c

···
 	pci_bus_size_bridges(rootbus);
 	pci_bus_assign_resources(rootbus);
 	pci_enable_bridges(rootbus);
-	pci_bus_add_devices(rootbus);
 	return 0;
 }