usb: gadget: renesas_usbhs: add mod_host support

This is mod_host prototype support for renesas_usbhs driver.
It doesn't support USB-Hub, and USB-DMAC for now.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/renesas_usbhs/mod.h b/drivers/usb/renesas_usbhs/mod.h
index df4b61d..1f28ed2 100644
--- a/drivers/usb/renesas_usbhs/mod.h
+++ b/drivers/usb/renesas_usbhs/mod.h
@@ -139,8 +139,21 @@
 	})
 
 /*
- * gadget control
+ * host / gadget control
  */
+#ifdef CONFIG_USB_RENESAS_USBHS_HCD
+extern int __devinit usbhs_mod_host_probe(struct usbhs_priv *priv);
+extern int __devexit usbhs_mod_host_remove(struct usbhs_priv *priv);
+#else
+static inline int usbhs_mod_host_probe(struct usbhs_priv *priv)
+{
+	return 0;
+}
+static inline void usbhs_mod_host_remove(struct usbhs_priv *priv)
+{
+}
+#endif
+
 #ifdef CONFIG_USB_RENESAS_USBHS_UDC
 extern int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv);
 extern void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv);