MIPS: Make various locks static.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c
index 32548b5..04b3147 100644
--- a/arch/mips/pci/ops-pmcmsp.c
+++ b/arch/mips/pci/ops-pmcmsp.c
@@ -206,7 +206,7 @@
 }
 #endif /* CONFIG_PROC_FS && PCI_COUNTERS */
 
-DEFINE_SPINLOCK(bpci_lock);
+static DEFINE_SPINLOCK(bpci_lock);
 
 /*****************************************************************************
  *