coresight: adding the LINKSINK block as a sink type

>From the TMC TRM, the ETF can be configured as buffer mode, so ETF can
be a sink type.
Signed-off-by: Xia Kaixu <kaixu.xia@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/coresight/coresight.c

@@ -305,7 +305,9 @@ static int coresight_build_paths(struct coresight_device *csdev,
 
 	list_add(&csdev->path_link, path);
 
-	if (csdev->type == CORESIGHT_DEV_TYPE_SINK && csdev->activated) {
+	if ((csdev->type == CORESIGHT_DEV_TYPE_SINK ||
+	    csdev->type == CORESIGHT_DEV_TYPE_LINKSINK) &&
+	    csdev->activated) {
 		if (enable)
 			ret = coresight_enable_path(path);
 		else