media: uvcvideo: Explicit alignment of uvc_frame and uvc_format

Struct uvc_frame and uvc_format are packaged together on
streaming->formats on a sigle allocation.

This is working fine because both structures have a field with a
pointer, but it will stop working when the sizeof() of any of those
structs is not a muliple of the sizeof(void*).

Make that aligment contract explicit.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
1 file changed