hw/arm/allwinner-h3: add USB host controller

hw/arm/allwinner-h3: add USB host controller

The Allwinner H3 System on Chip contains multiple USB 2.0 bus
connections which provide software access using the Enhanced
Host Controller Interface (EHCI) and Open Host Controller
Interface (OHCI) interfaces. This commit adds support for
both interfaces in the Allwinner H3 System on Chip.

Signed-off-by: Niek Linnenbank <[email protected]>
Reviewed-by: Gerd Hoffmann <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Alex Bennée <[email protected]>
Tested-by: Philippe Mathieu-Daudé <[email protected]>
Message-id: 20200311221854[email protected]
Signed-off-by: Peter Maydell <[email protected]>