binutils: Fix calloc argument order in srconv.c

binutils: Fix calloc argument order in srconv.c

GCC 14 will warn about calling calloc with swapped size and count
arguments.

binutils/srconv.c: In function ‘nints’:
binutils/srconv.c:598:36: error: ‘xcalloc’ sizes specified with ‘sizeof’ in the earlier argument and not in the later argument [-Werror=calloc-transposed-args]
  598 |   return (int *) (xcalloc (sizeof (int), x));
      |                                    ^~~
binutils/srconv.c:598:36: note: earlier argument should specify number of elements, later size of each element

binutils/

	* srconv.c (nints): Swap xcalloc arguments.
	(wr_du): Likewise.
	(wr_dus): Likewise.