support running test-opal-elog-parse under valgrind.
support running test-opal-elog-parse under valgrind.

run with:
VALGRIND='valgrind --quiet' ./test-opal-elog-parse

not quite running cleanly yet.

Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>
Signed-off-by: Cyril Bur <367d233c448abb973a0136207eb0cf446765a6f5@ozlabs.au.ibm.com>

leitao/ppc64-diag,leitao/ppc64-diag,leitao/ppc64-diag,leitao/ppc64-diag