powerpc/pci_64: Init pcibios subsys a bit later

Subsequent patches are going to add dependency/use of iommu_ops which is
initialized in subsys_initcall as well.

This moves pciobios_init() to the next initcall level.

This should not cause behavioral change.

Signed-off-by: Alexey Kardashevskiy <[e-mail]>
Signed-off-by: Timothy Pearson <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>
Link: https://msgid.link/[e-mail]

arch/powerpc/kernel/pci_64.c

···
 	return 0;
 }
 
-subsys_initcall(pcibios_init);
+subsys_initcall_sync(pcibios_init);
 
 int pcibios_unmap_io_space(struct pci_bus *bus)
 {