The AML tree enumerator interface allows enumeration of the nodes in the AML tree. The enumerator interface can be useful to search, serialise, print etc. the nodes in the AML tree. Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>