gfortran.dg/gomp/depend-iterator-{1,2}.f90: Use dg-do compile

'dg-do run' is pointless -1 due to dg-error. And it won't work except
by chance for gomp tests; as -2 only has depend(out:), a 'dg-do compile'
is sufficient.

gcc/testsuite/ChangeLog:

	* gfortran.dg/gomp/depend-iterator-1.f90: Use dg-do compile.
	* gfortran.dg/gomp/depend-iterator-2.f90: Use dg-do compile.