coresight: etm: perf: Sink selection using sysfs is deprecated

When using the perf interface, sink selection using sysfs is
deprecated.

Signed-off-by: Linu Cherian <lcherian@marvell.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200916191737.4001561-14-mathieu.poirier@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>