6154 const-ify segment ops structures

*** 95,105 ****
                          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 = {
          .dup            = SEGMAP_BADOP(int),
          .unmap          = SEGMAP_BADOP(int),
          .free           = segmap_free,
          .fault          = segmap_fault,
          .faulta         = segmap_faulta,
--- 95,105 ----
                          struct smap *, enum seg_rw);
  struct smap     *get_smap_kpm(caddr_t, page_t **);
  
  #define SEGMAP_BADOP(t) (t(*)())segmap_badop
  
! static const struct seg_ops segmap_ops = {
          .dup            = SEGMAP_BADOP(int),
          .unmap          = SEGMAP_BADOP(int),
          .free           = segmap_free,
          .fault          = segmap_fault,
          .faulta         = segmap_faulta,