coresight: fixing typographical error

Tracing gets enabled _for_ a source rather than _from_ a source.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index c69e1b9..a7cabfa2 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -207,7 +207,7 @@
  * Operations available for sources.
  * @trace_id:	returns the value of the component's trace ID as known
 		to the HW.
- * @enable:	enables tracing from a source.
+ * @enable:	enables tracing for a source.
  * @disable:	disables tracing for a source.
  */
 struct coresight_ops_source {