Docs/sound/index: Add missing SPDX License Identifier

Add missing SPDX License Identifier for sound documentation index file.

Signed-off-by: SeongJae Park <sj@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20230122213650.187710-9-sj@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/Documentation/sound/index.rst b/Documentation/sound/index.rst
index 5abed5fc648503b7f235137c422e7cc541bfa2a4..7e67e12730d3b4bbbe2f8a0ddc7799ba65c0c9ad 100644 (file)
--- a/Documentation/sound/index.rst
+++ b/Documentation/sound/index.rst
@@ -1,3 +1,5 @@
+.. SPDX-License-Identifier: GPL-2.0
+
 =============================
 Sound Subsystem Documentation
 =============================