dt-bindings: usb: uhci: convert to dt schema

Convert USB UHCI bindings to DT schema. Documenting aspeed compatibles
and missing properties. Adding aspeed/generic-uhci example and fixing
nodename for the original example.

Signed-off-by: Mohammad Shehar Yaar Tausif <sheharyaar48@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240423150550.91055-1-sheharyaar48@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>