The suniv SoC has a MUSB controller like the one in A33, but with a SRAM
region to be claimed.

Add support for it.
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20230201105348.1815461-3-andre.przywara@arm.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>