[media] media: Use strlcpy instead of custom code

Replace strncpy + manually setting the terminating '\0' with an strlcpy
call.

Reported-by: Joe Perches <[e-mail]>
Signed-off-by: Laurent Pinchart <[e-mail]>
Acked-by: Sakari Ailus <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/media-device.c

···
 		return -EINVAL;
 
 	u_ent.id = ent->id;
-	if (ent->name) {
-		strncpy(u_ent.name, ent->name, sizeof(u_ent.name));
-		u_ent.name[sizeof(u_ent.name) - 1] = '\0';
-	}
+	if (ent->name)
+		strlcpy(u_ent.name, ent->name, sizeof(u_ent.name));
 	u_ent.type = ent->type;
 	u_ent.revision = ent->revision;
 	u_ent.flags = ent->flags;