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

[Qian Cai]

Ping.

On Fri, 2019-06-07 at 15:00 -0400, Qian Cai wrote:
> 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
> 
> Signed-off-by: Qian Cai <cai at lca.pw>
> ---
>  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
>   *