mesa/x86: missing stdio inclusions

Several patches added include statements where required by the m64
build.  Some files are only compiled for m32, and require similar
changes.

Reviewed-by: Matt Turner <mattst88@gmail.com>

src/mesa/tnl/t_vertex_sse.c

@@ -25,6 +25,8 @@
  *    Keith Whitwell <keithw@vmware.com>
  */
 
+#include <stdio.h>
+
 #include "main/glheader.h"
 #include "main/context.h"
 #include "main/colormac.h"

src/mesa/x86/rtasm/x86sse.c

@@ -1,6 +1,8 @@
 #ifdef USE_X86_ASM
 #if defined(__i386__) || defined(__386__)
 
+#include <stdio.h>
+
 #include "main/imports.h"
 #include "x86sse.h"