dt-bindings: usb: richtek,rt1711h: Add Hynetek HUSB311

dt-bindings: usb: richtek,rt1711h: Add Hynetek HUSB311

HUSB311 is a pin-compatible and register-compatible drop-in replacement
for RT1711H, so add its compatible string to the existing binding.

Link: https://www.hynetek.com/uploadfiles/site/219/news/0863c0c7-f535-4f09-bacd-0440d2c21088.pdf
Link: https://dl.xkwy2018.com/downloads/RK3588S/03_Product%20Line%20Branch_Tablet/02_Key%20Device%20Specifications/HUSB311%20introduction%2020210526.pdf
Link: https://www.richtek.com/assets/product_file/RT1711H/DS1711H-04.pdf
Signed-off-by: Alexey Charkov <alchark@flipper.net>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260318-husb311-v4-3-69e029255430@flipper.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>