ntp: bump to version 4.2.8p4

Signed-off-by: James Knight <james.knight@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/ntp/ntp.hash

@@ -1,4 +1,4 @@
-# From http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-4.2.8p3.tar.gz.md5
-md5	b98b0cbb72f6df04608e1dd5f313808b	ntp-4.2.8p3.tar.gz
+# From http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-4.2.8p4.tar.gz.md5
+md5	6af96862b09324a8ef965ca76b759c8b	ntp-4.2.8p4.tar.gz
 # Calculated based on the hash above
-sha256	818ca4f2ed6ca845b1c5ec43f5e6ad905eaa0fc0aab2d509ed6b962a37fbf38f	ntp-4.2.8p3.tar.gz
+sha256	0d6961572548d2c4af96f58f763e22ac620f5afef717384ddc317a0e365cfdb9	ntp-4.2.8p4.tar.gz

package/ntp/ntp.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 NTP_VERSION_MAJOR = 4.2
-NTP_VERSION = $(NTP_VERSION_MAJOR).8p3
+NTP_VERSION = $(NTP_VERSION_MAJOR).8p4
 NTP_SITE = http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-$(NTP_VERSION_MAJOR)
 NTP_DEPENDENCIES = host-pkgconf libevent $(if $(BR2_PACKAGE_BUSYBOX),busybox)
 NTP_LICENSE = ntp license