coresight: Simplify connection fixup mechanism

There is some duplication between coresight_fixup_device_conns() and
coresight_fixup_orphan_conns(). They both do the same thing except for
the fact that coresight_fixup_orphan_conns() can't handle iterating over
itself.

By making it able to handle fixing up it's own connections the other
function can be removed.

Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20230425143542.2305069-9-james.clark@arm.com