ld: Correct --dependency-file order

Change ld --help output to

  -d, -dc, -dp                Force common symbols to be defined
  --dependency-file FILE      Write dependency file

instead of

  -d, -dc                     Force common symbols to be defined
  --dependency-file FILE, -dp Write dependency file

	PR ld/26165
	* lexsup.c (ld_options): Correct --dependency-file order.