[PATCH v3] gpu/drm_memory: fix a few warnings

[Qian Cai]

The opening comment mark "/**" is reserved for kernel-doc comments, so
it will generate a warning with "make W=1".

drivers/gpu/drm/drm_memory.c:2: warning: Cannot understand  * \file
drm_memory.c

Also, silence a checkpatch warning by adding a license identfiter where
it indicates the MIT license further down in the source file.

WARNING: Missing or malformed SPDX-License-Identifier tag in line 1

Fix it by adding the MIT SPDX identifier without touching the boilerplate
language.

Suggested-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Qian Cai <cai@xxxxxx>
---

v3: Keep the boilerplate language.
v2: Remove the redundant description of the license.

 drivers/gpu/drm/drm_memory.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_memory.c b/drivers/gpu/drm/drm_memory.c
index 132fef8ff1b6..683042c8ee2c 100644
--- a/drivers/gpu/drm/drm_memory.c
+++ b/drivers/gpu/drm/drm_memory.c
@@ -1,4 +1,5 @@
-/**
+// SPDX-License-Identifier: MIT
+/*
  * \file drm_memory.c
  * Memory management wrappers for DRM
  *
-- 
1.8.3.1