feat(cm): handle asymmetry for SPE feature

With introduction of FEAT_STATE_CHECK_ASYMMETRIC, the asymmetry of cores
can be handled. SPE is one of the features which can be asymmetric
across cores.

Add a function to handle this asymmetry by re-visting the feature
presence on running core.
There are two possible cases:
 - If the primary has the feature and secondary does not have it then,
   the feature needs to be disabled.
 - If the primary does not have the feature and secondary has it then,
   the feature need to be enabled

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: Ibb2b88b5ef63b3efcb80801898ae8d8967e5c271
1 file changed