IO-domain handling is part of the general register files, so should live under the grf directly. This change allows the grf to be a simple-mfd and the io-domains fetching the syscon regmap from that parent-node. The old binding is of course preserved, though deprecated. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Tested-by: David Wu <david.wu@rock-chips.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>