usb: host: ehci-generic: convert to livetree

Update the generic EHCI driver to support a live tree.
Signed-off-by: NPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>

drivers/usb/host/ehci-generic.c

@@ -108,7 +108,7 @@ static int ehci_usb_probe(struct udevice *dev)
 		}
 	}
 
-	hccr = map_physmem(devfdt_get_addr(dev), 0x100, MAP_NOCACHE);
+	hccr = map_physmem(dev_read_addr(dev), 0x100, MAP_NOCACHE);
 	hcor = (struct ehci_hcor *)((uintptr_t)hccr +
 				    HC_LENGTH(ehci_readl(&hccr->cr_capbase)));