mvebu: usb: xhci: a38x support

This makes the initial changes need to support the
a38x series of SOCs.  It adds the device-tree identifier
as well as changing the board_support function to take
the IO address designated by device-tree.

Signed-off-by: Jon Nettleton <jon@solid-run.com>
[baruch: use fdt_addr_t; update 37xx and 8K implementations]
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/Marvell/mvebu_armada-37xx/board.c b/board/Marvell/mvebu_armada-37xx/board.c
index 8dc1f46..ac3e3a3 100644
--- a/board/Marvell/mvebu_armada-37xx/board.c
+++ b/board/Marvell/mvebu_armada-37xx/board.c
@@ -123,7 +123,7 @@
 }
 
 /* Board specific xHCI enable code */
-int board_xhci_enable(void)
+int board_xhci_enable(fdt_addr_t base)
 {
 	struct udevice *dev;
 	int ret;