coresight: Adding ABI documentation

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 3995263..7d18080 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -925,6 +925,7 @@
 F:	drivers/coresight/*
 F:	Documentation/trace/coresight.txt
 F:	Documentation/devicetree/bindings/arm/coresight.txt
+F:	Documentation/ABI/testing/sysfs-bus-coresight-devices-*
 
 ARM/CORGI MACHINE SUPPORT
 M:	Richard Purdie <rpurdie@rpsys.net>