Add the reset controller dt-bindings exported from infracfg, pericfg,
hifsys and ethsys which could be found on MT7622 SoC. So that we can
reference them from within a device-tree file.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>