[QUEUED v20180920 13/16] stm class: SPDX-ify the documentation

[Alexander Shishkin]

Add the SPDX header to the STM class documentation.

Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
---
 Documentation/trace/stm.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/trace/stm.rst b/Documentation/trace/stm.rst
index 2c22ddb7fd3e..56b959a39814 100644
--- a/Documentation/trace/stm.rst
+++ b/Documentation/trace/stm.rst
@@ -1,3 +1,5 @@
+.. SPDX-License-Identifier: GPL-2.0
+
 ===================
 System Trace Module
 ===================
-- 
2.18.0