net/ntp: sync with upstream

Taken from: HardenedBSD

net/ntp/Makefile

@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	ntp
-PORTVERSION=	4.2.8p14
+PORTVERSION=	4.2.8p15
 CATEGORIES=	net
 MASTER_SITES=	http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ \
 		http://archive.ntp.org/ntp4/ntp-4.2/ \

net/ntp/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1583329796
-SHA256 (ntp-4.2.8p14.tar.gz) = 1960e4f081f6aafd108d721bc3ab15f9e8dfd08dc08339aa95bca9d2545e4eb7
-SIZE (ntp-4.2.8p14.tar.gz) = 7007263
+TIMESTAMP = 1592955783
+SHA256 (ntp-4.2.8p15.tar.gz) = f65840deab68614d5d7ceb2d0bb9304ff70dcdedd09abb79754a87536b849c19
+SIZE (ntp-4.2.8p15.tar.gz) = 7015970

net/ntp/files/patch-include_ntp__config.h

@@ -1,13 +0,0 @@
-Index: include/ntp_config.h
-===================================================================
---- include/ntp_config.h	(revision 359675)
-+++ include/ntp_config.h	(revision 359676)
-@@ -280,7 +280,7 @@
-  * Poll Skew List
-  */
- 
--psl_item psl[17-3+1];		/* values for polls 3-17 */
-+extern psl_item psl[17-3+1];	/* values for polls 3-17 */
- 				/* To simplify the runtime code we */
- 				/* don't want to have to special-case */
- 				/* dealing with a default */

net/ntp/files/patch-ntpd_ntp__config.c

@@ -1,13 +0,0 @@
-Index: ntpd/ntp_config.c
-===================================================================
---- ntpd/ntp_config.c	(revision 359675)
-+++ ntpd/ntp_config.c	(revision 359676)
-@@ -202,6 +202,8 @@
- 
- extern char *stats_drift_file;	/* name of the driftfile */
- 
-+psl_item psl[17-3+1];
-+
- #ifdef BC_LIST_FRAMEWORK_NOT_YET_USED
- /*
-  * backwards compatibility flags