Correct ld-elf/eh5 test for hppa64

Commit 3c0afdb7 regressed this test for hppa64, because the test
had been enabled for hppa64 in the time between the mips changes and
their reversion.  This patch isn't just a simple reapply, I recreated
the testsuite change by hand for hppa64: Two lines in eh5.d might need
further changes for mips.