Add a new initscript to save the date and time to the hardware clock on shutdown. Signed-off-by: Michael Walle <michael@walle.cc> [Arnout: - package as hwclock-initscript instead of buildroot-initscripts; - mention in help text that it isn't needed at boot; - rewrite initscript according to our usual pattern; - fix shellcheck errors. ] Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>