usb: musb: drop a gigantic amount of ifdeferry

the MUSB IP is always OTG, so there's no point
in adding so many ifdefs on the code. Drop those
and always compile the driver for OTG support.

This also allows us to drop the useless "driver
mode" choice. For doing that, we need to make
musb depend on both Host and Peripheral side.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/musb/musb_gadget.c

@@ -2048,9 +2048,7 @@ static int musb_gadget_stop(struct usb_gadget_driver *driver)
 
 	spin_lock_irqsave(&musb->lock, flags);
 
-#ifdef	CONFIG_USB_MUSB_OTG
 	musb_hnp_stop(musb);
-#endif
 
 	(void) musb_gadget_vbus_draw(&musb->g, 0);
 
@@ -2171,7 +2169,6 @@ void musb_g_disconnect(struct musb *musb)
 
 	switch (musb->xceiv->state) {
 	default:
-#ifdef	CONFIG_USB_MUSB_OTG
 		dev_dbg(musb->controller, "Unhandled disconnect %s, setting a_idle\n",
 			otg_state_string(musb->xceiv->state));
 		musb->xceiv->state = OTG_STATE_A_IDLE;
@@ -2183,7 +2180,6 @@ void musb_g_disconnect(struct musb *musb)
 		break;
 	case OTG_STATE_B_WAIT_ACON:
 	case OTG_STATE_B_HOST:
-#endif
 	case OTG_STATE_B_PERIPHERAL:
 	case OTG_STATE_B_IDLE:
 		musb->xceiv->state = OTG_STATE_B_IDLE;