OS-2366 ddi_periodic_add(9F) is entirely rubbish

@@ -898,11 +898,11 @@
 file path=usr/include/sys/ddi_implfuncs.h
 file path=usr/include/sys/ddi_intr.h
 file path=usr/include/sys/ddi_intr_impl.h
 file path=usr/include/sys/ddi_isa.h
 file path=usr/include/sys/ddi_obsolete.h
-file path=usr/include/sys/ddi_timer.h
+file path=usr/include/sys/ddi_periodic.h
 file path=usr/include/sys/ddidevmap.h
 file path=usr/include/sys/ddidmareq.h
 file path=usr/include/sys/ddifm.h
 file path=usr/include/sys/ddifm_impl.h
 file path=usr/include/sys/ddimapreq.h