usb: musb: omap2430: make complain on -EPROBE_DEFER dev_dbg

There is no point having this complaint to be dev_err as it is just adding
noise to bootlog.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/musb/omap2430.c

@@ -277,7 +277,7 @@ static int omap2430_musb_init(struct musb *musb)
 		if (status == -ENXIO)
 			return status;
 
-		dev_err(dev, "HS USB OTG: no transceiver configured\n");
+		dev_dbg(dev, "HS USB OTG: no transceiver configured\n");
 		return -EPROBE_DEFER;
 	}