math: convert textflags from numbers to symbols

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/12773044
diff --git a/src/pkg/math/dim_386.s b/src/pkg/math/dim_386.s
index 6a31c75..f715114 100644
--- a/src/pkg/math/dim_386.s
+++ b/src/pkg/math/dim_386.s
@@ -2,11 +2,13 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-TEXT ·Dim(SB),7,$0
+#include "../../cmd/ld/textflag.h"
+
+TEXT ·Dim(SB),NOSPLIT,$0
 	JMP ·dim(SB)
 
-TEXT ·Max(SB),7,$0
+TEXT ·Max(SB),NOSPLIT,$0
 	JMP ·max(SB)
 
-TEXT ·Min(SB),7,$0
+TEXT ·Min(SB),NOSPLIT,$0
 	JMP ·min(SB)