UPSTREAM: coresight: tmc-etr: Introduce the notion of IDR to ETR devices

In CPU-wide scenarios with an N:1 source/sink topology, sources share
the same sink.  In order to reuse the same sink for all sources an
IDR is needed to archive events that have already been accounted for.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

(Upstream commit c5ff734462b1d32f793db717ef222cd05e6232d5).

Bug: 140266694
Change-Id: Ib1149bd168dc5231fc1f18306f7cef068792b3e8
Signed-off-by: Yabin Cui <yabinc@google.com>