[og9] Fix up tests for oaccdevlow pass splitting

[og9] Fix up tests for oaccdevlow pass splitting

	gcc/testsuite/
	* c-c++-common/goacc/classify-kernels-unparallelized.c,
	c-c++-common/goacc/classify-kernels.c,
	c-c++-common/goacc/classify-parallel.c,
	c-c++-common/goacc/classify-routine.c,
	gfortran.dg/goacc/classify-kernels-unparallelized.f95,
	gfortran.dg/goacc/classify-kernels.f95,
	gfortran.dg/goacc/classify-parallel.f95,
	gfortran.dg/goacc/classify-routine.f95: Scan oaccloops dump instead of
	oaccdevlow pass.

(cherry picked from openacc-gcc-9-branch commit
40d6dc794b87eb2e51e294a11b83194fbbb02b8b)