USB: remove warn() macro from usb net drivers

USB should not be having it's own printk macros, so remove warn() and
use the system-wide standard of dev_warn() wherever possible.  In the
few places that will not work out, use a basic printk().

Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/net/irda/stir4200.c b/drivers/net/irda/stir4200.c
index 0519637..148ce28 100644
--- a/drivers/net/irda/stir4200.c
+++ b/drivers/net/irda/stir4200.c
@@ -506,7 +506,7 @@
 			goto found;
 	}
 
-	warn("%s: invalid speed %d", stir->netdev->name, speed);
+	dev_warn(&stir->netdev->dev, "invalid speed %d\n", speed);
 	return -EINVAL;
 
  found:
@@ -598,8 +598,8 @@
 		err = read_reg(stir, REG_FIFOCTL, stir->fifo_status, 
 				   FIFO_REGS_SIZE);
 		if (unlikely(err != FIFO_REGS_SIZE)) {
-			warn("%s: FIFO register read error: %d", 
-			     stir->netdev->name, err);
+			dev_warn(&stir->netdev->dev,
+				 "FIFO register read error: %d\n", err);
 
 			return err;
 		}
@@ -836,8 +836,8 @@
 
 	/* in case of error, the kernel thread will restart us */
 	if (err) {
-		warn("%s: usb receive submit error: %d",
-			stir->netdev->name, err);
+		dev_warn(&stir->netdev->dev, "usb receive submit error: %d\n",
+			 err);
 		stir->receiving = 0;
 		wake_up_process(stir->thread);
 	}