USB: MUSB: DaVinci: compile fix: add platform_set_mode stub

This fixes compilation after 2.6.25-rc8 merge, but needs a real
implementation.
Signed-off-by: Kevin Hilman <khilman@mvista.com>

drivers/usb/musb/davinci.c

@@ -377,6 +377,11 @@ static irqreturn_t davinci_interrupt(int irq, void *__hci)
 	return IRQ_HANDLED;
 }
 
+void musb_platform_set_mode(struct musb *musb, u8 musb_mode)
+{
+	WARN("FIXME: %d not implemented\n", __func__);
+}
+
 int __init musb_platform_init(struct musb *musb)
 {
 	void __iomem	*tibase = musb->ctrl_base;