[MIPS] SB1: On bootup only flush cache on local CPU.

This fixes a warning on bootup warning in smp_call_function.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/c-sb1.c b/arch/mips/mm/c-sb1.c
index ea49a77..d0ddb4a 100644
--- a/arch/mips/mm/c-sb1.c
+++ b/arch/mips/mm/c-sb1.c
@@ -505,5 +505,5 @@
 	:
 	: "memory");
 
-	flush_cache_all();
+	local_sb1___flush_cache_all();
 }