[PATCH v4 2/4] dt-bindings: usb: Add CIX Sky1 USBSSP controller

[Hongliang Yang]

Hi Krzysztof,

Gentle ping on my question below about representing the shared RCSU
region with a simple-bus container and translating ranges, versus
absolute addresses in reg directly under the soc node. I would like
to settle this before sending v5.

Also noted your comments on the missing blank line before the
Signed-off-by tag -- the v5 commits are created with git -s, so this
won't recur.

Best regards,
Hongliang Yang