6154 const-ify segment ops structures

@@ -95,11 +95,11 @@
                         struct smap *, enum seg_rw);
 struct smap     *get_smap_kpm(caddr_t, page_t **);
 
 #define SEGMAP_BADOP(t) (t(*)())segmap_badop
 
-static struct seg_ops segmap_ops = {
+static const struct seg_ops segmap_ops = {
         .dup            = SEGMAP_BADOP(int),
         .unmap          = SEGMAP_BADOP(int),
         .free           = segmap_free,
         .fault          = segmap_fault,
         .faulta         = segmap_faulta,