CoreSight: Enabling CoreSight on a secured device

The status of the CoreSight fuses can be derived from the AUTHSTATUS
register. This patch uses this register to decide the registration of
the CoreSight components.

Change-Id: Id3c3ae5ae6d72ac732fdab195b74eeba7edca99e
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>