Documentation: dt-bindings: add dt binding info for Rockchip dwc2
Documentation: dt-bindings: add dt binding info for Rockchip dwc2

This add necessary dwc2 binding documentation for Rockchip socs:
rk3066, rk3188 and rk3288

Signed-off-by: Kever Yang <ab47bca685792136e6b14c25f21448c9db28bc3c@rock-chips.com>
Acked-by: Stephen Warren <5ef2a23ba3aff51d1cfc8c113c1ec34b608b3b13@nvidia.com>
Reviewed-by: Doug Anderson <49983c4a76b998672954ed5edf4a62db4a336502@chromium.org>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs