x86/PCI: Make pci_subsys_init() static

The pci_subsys_init() is a subsys_initcall that can be declared static.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c
index 5b662c0..ea6f380 100644
--- a/arch/x86/pci/legacy.c
+++ b/arch/x86/pci/legacy.c
@@ -54,7 +54,7 @@
 }
 EXPORT_SYMBOL_GPL(pcibios_scan_specific_bus);
 
-int __init pci_subsys_init(void)
+static int __init pci_subsys_init(void)
 {
 	/*
 	 * The init function returns an non zero value when