usb: ehci: ehci-marvell: Support for marvell,ac5-ehci

Unlike the other 64-bit mvebu SoCs the AlleyCat5 uses the older ehci
block from the 32-bit SoCs. Adapt the ehci-marvell.c driver to cope with
the fact that the ac5 does not have the mbus infrastructure the 32-bit
SoCs have and ensure USB_EHCI_IS_TDI is selected.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 4efdd70..6213b3c 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -178,6 +178,7 @@
 	depends on ARCH_MVEBU || ARCH_KIRKWOOD || ARCH_ORION5X
 	default y
 	select USB_EHCI_IS_TDI if !ARM64
+	select USB_EHCI_IS_TDI if ALLEYCAT_5
 	---help---
 	  Enables support for the on-chip EHCI controller on MVEBU SoCs.