coresight: replicator: Prepare for merging with dynamic-replicator

As a preparatory step to merge the separate drivers for static and
dynamic replicators, annotate the static replicator specific details.
Also refactor the probe routine to make it generic in order to merge
the drivers easily.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>