MIPS: PCI: Make pcibios_set_cache_line_size an initcall

In preparation for allowing configurations in which pcibios_init is not
included, make pcibios_set_cache_line_size an initcall. arch_initcall is
used such that it runs before the pcibios_init subsys_initcall for
platforms that continue to use it.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14342/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/pci/pci.c

@@ -220,7 +220,7 @@ void register_pci_controller(struct pci_controller *hose)
 	       "Skipping PCI bus scan due to resource conflict\n");
 }
 
-static void __init pcibios_set_cache_line_size(void)
+static int __init pcibios_set_cache_line_size(void)
 {
 	struct cpuinfo_mips *c = &current_cpu_data;
 	unsigned int lsize;
@@ -238,14 +238,14 @@ static void __init pcibios_set_cache_line_size(void)
 	pci_dfl_cache_line_size = lsize >> 2;
 
 	pr_debug("PCI: pci_cache_line_size set to %d bytes\n", lsize);
+	return 0;
 }
+arch_initcall(pcibios_set_cache_line_size);
 
 static int __init pcibios_init(void)
 {
 	struct pci_controller *hose;
 
-	pcibios_set_cache_line_size();
-
 	/* Scan all of the recorded PCI controllers.  */
 	list_for_each_entry(hose, &controllers, list)
 		pcibios_scanbus(hose);