feat: introduce asymmetric feature testing for feat_spe

Change-Id: Ide9bda1b5f1cabc63241f42b93a672d8e04b8119
Signed-off-by: Charlie Bareham <charlie.bareham@arm.com>
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
2 files changed