buildroot

package/ntp: security bump to 4.2.8p10

Changed NTP_SITE to https to circumvent "URL transformed to HTTPS due
to an HSTS policy" during download.

For details about the bugs fixed see:
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
http://www.kb.cert.org/vuls/id/633847

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit b47aec79d2e19ef7e3f04d2758c3a2930d47cebe)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>