laptop-mode: remount disks with noatime option when laptop-mode activates

config/includes.chroot/etc/laptop-mode/conf.d/board-specific/custom-mount-noatime.conf

@@ -0,0 +1,9 @@
+# Should laptop mode tools add the "noatime" option to the mount options when
+# laptop mode is enabled?
+#
+CONTROL_NOATIME=1
+
+# Should laptop use relatime instead of noatime? The "relatime" mount option has
+# more standards-compliant semantics, and allows more applications to work,
+# while retaining a low level of atime updates (i.e., disk writes).
+USE_RELATIME=0