If using kernel PLL (for NTP), initialize "fixtick" to a reasonable

approximation of reality if the MD code doesn't.  This variable is the
equivalent of "tickfix" for the non-NTP path.

This allows an alpha kernel (where hz=1024) with "options NTP" to
synch up quite nicely (as opposed to having an frequency error of
~560ppm, which is outside the capture range of the PLL).

sys/kern/kern_clock.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: kern_clock.c,v 1.49 1999/08/05 18:08:15 thorpej Exp $	*/
+/*	$NetBSD: kern_clock.c,v 1.50 1999/09/06 20:44:02 sommerfeld Exp $	*/
 
 /*-
  * Copyright (c) 1982, 1986, 1991, 1993
@@ -347,6 +347,10 @@ initclocks()
 	default:
 		panic("weird hz");
 	}
+	if (fixtick == 0) {
+		/* give MD code a chance to set this to a better value; but, if it doesn't, we should.. */
+		fixtick = (1000000 - (hz*tick));
+	}
 #endif
 }