Aspeed udc is compliant with USB2.0, supports USB High Speed
and Full Speed, backward compatible with USB1.1.

Supports independent DMA channel for each generic endpoint.
Supports 32/256 stages descriptor mode for all generic endpoints.

This driver supports full functionality including single/multiple
stages descriptor mode, and exposes 1 UDC gadget driver.
Signed-off-by: Neal Liu <neal_liu@aspeedtech.com>
Link: https://lore.kernel.org/r/20220523030134.2977116-2-neal_liu@aspeedtech.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>