Update chrony.conf (#317)

config/files/usr/etc/chrony.conf

@@ -1,10 +1,33 @@
+# Copyright © 2014-2024 GrapheneOS
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
 # https://github.com/GrapheneOS/infrastructure/blob/main/chrony.conf
+
 server time.cloudflare.com iburst nts
 server ntppool1.time.nl iburst nts
 server nts.netnod.se iburst nts
 server ptbtime1.ptb.de iburst nts
+server time.dfm.dk iburst nts
+server time.cifelli.xyz iburst nts
 
-minsources 2
+minsources 3
 authselectmode require
 
 # EF
@@ -20,3 +43,5 @@ rtconutc
 rtcsync
 
 cmdport 0
+
+noclientlog