Now that support for Intersil ISL12057 RTC chip is available
upstream, let's enable it in NETGEAR ReadyNAS 2120 .dts file
so that the device stop believing it's the 70's.
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>