package/ntp: bump to version 4.2.8p15

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/ntp/ntp.hash

@@ -1,5 +1,5 @@
-# From https://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-4.2.8p14.tar.gz.md5
-md5  783edaf1d68ddf651bde64eda54a579d  ntp-4.2.8p14.tar.gz
+# From http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-4.2.8p15.tar.gz.md5
+md5  e1e6b23d2fc75cced41801dbcd6c2561  ntp-4.2.8p15.tar.gz
 # Calculated based on the hash above
-sha256  1960e4f081f6aafd108d721bc3ab15f9e8dfd08dc08339aa95bca9d2545e4eb7  ntp-4.2.8p14.tar.gz
+sha256  f65840deab68614d5d7ceb2d0bb9304ff70dcdedd09abb79754a87536b849c19  ntp-4.2.8p15.tar.gz
 sha256  957e6a13445cc61ab1ca3dc80d8c269cf9b0a6d9eaec20f9f39639b0b3e66ee8  COPYRIGHT

package/ntp/ntp.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 NTP_VERSION_MAJOR = 4.2
-NTP_VERSION = $(NTP_VERSION_MAJOR).8p14
+NTP_VERSION = $(NTP_VERSION_MAJOR).8p15
 NTP_SITE = https://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-$(NTP_VERSION_MAJOR)
 NTP_DEPENDENCIES = host-pkgconf libevent
 NTP_LICENSE = NTP