x86: Put wcs{n}len-sse4.1 in the sse4.1 text section

Previously was missing but the two implementations shouldn't get in
the sse2 (generic) text section.

(cherry picked from commit afc6e4328f)

sysdeps/x86_64/multiarch/strlen-vec.S

@@ -28,6 +28,10 @@
 # define SHIFT_RETURN
 #endif
 
+#ifndef SECTION
+# define SECTION(p)	p
+#endif
+
 /* Long lived register in strlen(s), strnlen(s, n) are:
 
 	%xmm3 - zero
@@ -37,7 +41,7 @@
 */
 
 
-.text
+	.section SECTION(.text),"ax",@progbits
 ENTRY(strlen)
 
 /* Test 64 bytes from %rax for zero. Save result as bitmask in %rdx.  */

sysdeps/x86_64/multiarch/wcslen-sse4_1.S

@@ -1,4 +1,5 @@
 #define AS_WCSLEN
 #define strlen	__wcslen_sse4_1
+#define SECTION(p)	p##.sse4.1
 
 #include "strlen-vec.S"

sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S

@@ -1,5 +1,6 @@
 #define AS_WCSLEN
 #define AS_STRNLEN
 #define strlen	__wcsnlen_sse4_1
+#define SECTION(p)	p##.sse4.1
 
 #include "strlen-vec.S"