bus: Convert to the new interceptor scheme

This was missed in commit a90d053b84.

Fixes:		a90d053b84
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation

sys/x86/x86/bus_machdep.c

@@ -24,13 +24,13 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#if defined(KASAN) || defined(KCSAN)
-#define	SAN_RUNTIME
-#endif
-
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#ifdef SAN_NEEDS_INTERCEPTORS
+#define	SAN_RUNTIME
+#endif
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <x86/bus.h>