Use __FBSDID().

sys/i386/svr4/svr4_genassym.c

@@ -1,5 +1,6 @@
-/* $FreeBSD$ */
 /* Derived from:  Id: linux_genassym.c,v 1.8 1998/07/29 15:50:41 bde Exp */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
 #include <sys/assym.h>

sys/i386/svr4/svr4_machdep.c

@@ -24,10 +24,11 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * $FreeBSD$
  */
 
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/systm.h>