xfail all scan-tree-dump-times checks on hppa*64*-*-* in sra-17.c and sra-18.c

2024-01-64  John David Anglin  <danglin@gcc.gnu.org>

gcc/testsuite/ChangeLog:

	PR tree-optimization/91624
	* gcc.dg/tree-ssa/sra-17.c: xfail all scan-tree-dump-times
	checks on hppa*64*-*-*.
	* gcc.dg/tree-ssa/sra-18.c: Likewise.