OpalGard: run on all CPU variants
OpalGard: run on all CPU variants

There isn't a reason to restrict to p8 and p9, we should run this
everywhere that can support GUARD partitions.

Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.ibm.com>

open-power/op-test-framework,open-power/op-test-framework,open-power/op-test-framework