Add a "sinks" directory entry so that users can see all the sinks
available in the system in a single place.  Individual sink are added
as they are registered with the coresight bus.
Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: NSuzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>