From d13a280faec9c2c7d530fd3c6787a4d09f3f1c0f Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Fri, 23 Aug 2013 14:24:36 -0700
Subject: [PATCH] USB: serial: convert bus code to use drv_groups

The drv_attrs field of struct bus_type is going away soon, drv_groups
should be used instead.  This converts the USB serial bus code to use
the correct field.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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