sunxi: ehci: Convert to the driver-model

Convert sunxi-boards which use the sunxi-ehci code to the driver-model.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index c60c81d..5b6cc5c 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -556,4 +556,7 @@
 config DM_SERIAL
 	default y
 
+config DM_USB
+	default y if !USB_MUSB_SUNXI
+
 endif