usb: ehci: ehci-marvell.c: Add Armada 3700 support (ARMv8)

usb: ehci: ehci-marvell.c: Add Armada 3700 support (ARMv8)

This patch adds DM based support for the Armada 3700 EHCI controller.
The address windows don't need to get configured in this case. The
difference here is detected via DT compatible property at runtime.

With this support and the DM xHCI driver, both XHCI and eHCI can be
used simultaniously on the MVEBU boards now.

Signed-off-by: Stefan Roese <[email protected]>
Cc: Nadav Haklai <[email protected]>
Cc: Kostya Porotchkin <[email protected]>
Cc: Wilson Ding <[email protected]>
Cc: Victor Gu <[email protected]>
Cc: Hua Jing <[email protected]>
Cc: Terry Zhou <[email protected]>
Cc: Hanna Hawa <[email protected]>
Cc: Haim Boot <[email protected]>
Acked-by: Marek Vasut <[email protected]>