usb: gadget: renesas_usbhs: fixup driver compile style

In current renesas-usbhs,
there was inconsistency about the style of kernel module or built-in.
This patch solve it.

[ balbi@ti.com : fix compile issue when building modules ]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/renesas_usbhs/Kconfig

@@ -5,6 +5,7 @@
 config USB_RENESAS_USBHS
 	tristate 'Renesas USBHS controller'
 	depends on SUPERH || ARCH_SHMOBILE
+	depends on USB && USB_GADGET
 	default n
 	help
 	  Renesas USBHS is a discrete USB host and peripheral controller chip

drivers/usb/renesas_usbhs/Makefile

@@ -6,5 +6,10 @@ obj-$(CONFIG_USB_RENESAS_USBHS)	+= renesas_usbhs.o
 
 renesas_usbhs-y			:= common.o mod.o pipe.o fifo.o
 
-renesas_usbhs-$(CONFIG_USB_RENESAS_USBHS_HCD)	+= mod_host.o
-renesas_usbhs-$(CONFIG_USB_RENESAS_USBHS_UDC)	+= mod_gadget.o
+ifneq ($(CONFIG_USB_RENESAS_USBHS_HCD),)
+	renesas_usbhs-y		+= mod_host.o
+endif
+
+ifneq ($(CONFIG_USB_RENESAS_USBHS_UDC),)
+	renesas_usbhs-y		+= mod_gadget.o
+endif

drivers/usb/renesas_usbhs/mod.h

@@ -141,7 +141,8 @@ void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
 /*
  * host / gadget control
  */
-#ifdef CONFIG_USB_RENESAS_USBHS_HCD
+#if	defined(CONFIG_USB_RENESAS_USBHS_HCD) || \
+	defined(CONFIG_USB_RENESAS_USBHS_HCD_MODULE)
 extern int __devinit usbhs_mod_host_probe(struct usbhs_priv *priv);
 extern int __devexit usbhs_mod_host_remove(struct usbhs_priv *priv);
 #else
@@ -154,7 +155,8 @@ static inline void usbhs_mod_host_remove(struct usbhs_priv *priv)
 }
 #endif
 
-#ifdef CONFIG_USB_RENESAS_USBHS_UDC
+#if	defined(CONFIG_USB_RENESAS_USBHS_UDC) || \
+	defined(CONFIG_USB_RENESAS_USBHS_UDC_MODULE)
 extern int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv);
 extern void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv);
 #else