[MIPS] Export __ucmpdi2 to modules.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/lib/ucmpdi2.c b/arch/mips/lib/ucmpdi2.c
index b33d856..bb4cb2f 100644
--- a/arch/mips/lib/ucmpdi2.c
+++ b/arch/mips/lib/ucmpdi2.c
@@ -17,3 +17,5 @@
 		return 2;
 	return 1;
 }
+
+EXPORT_SYMBOL(__ucmpdi2);