[media] media: fix truncated entity specification

When enumerating an entity, assign the entire entity specification
instead of only the first two words. (This requires giving the
specification union a name.)

So far, no driver actually uses more than two words, but this will
be needed for ALSA entities.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
[laurent.pinchart@ideasonboard.com: Rename specification to info]
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index cd8bca6..29e7bba 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -98,7 +98,7 @@
 
 		/* Sub-device specifications */
 		/* Nothing needed yet */
-	};
+	} info;
 };
 
 static inline u32 media_entity_type(struct media_entity *entity)