USB: Convert concatenated __FILE__ to %s, __FILE__

Reduces string space a bit
Neaten a macro redefine of dbg

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c
index 7c0bd13..dd41d87 100644
--- a/drivers/usb/misc/ldusb.c
+++ b/drivers/usb/misc/ldusb.c
@@ -798,7 +798,7 @@
 	/* register this driver with the USB subsystem */
 	retval = usb_register(&ld_usb_driver);
 	if (retval)
-		err("usb_register failed for the "__FILE__" driver. Error number %d\n", retval);
+		err("usb_register failed for the %s driver. Error number %d\n", __FILE__, retval);
 
 	return retval;
 }