coresight: etm-perf: Update to activate selected configuration

coresight: etm-perf: Update to activate selected configuration

Add calls to activate the selected configuration as perf starts
and stops the tracing session.

Link: https://lore.kernel.org/r/20210723165444.1048-7-mike.leach@linaro.org
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20210818194022.379573-7-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>