usb: gadget: add SuperSpeed support to the Gadget Framework

From bdb64d727216b49a18c2b8337658adc6b2db82ea Mon Sep 17 00:00:00 2001
From: Tatyana Brokhman <tlinder@codeaurora.org>
Date: Wed, 29 Jun 2011 16:41:50 +0300

SuperSpeed USB has defined a new descriptor, called
the Binary Device Object Store (BOS) Descriptor. It
has also changed a bit the definition of SET_FEATURE
and GET_STATUS requests to add USB3-specific details.

This patch implements both changes to the Composite
Gadget Framework.

[ balbi@ti.com : slight changes to commit log
		 fixed a compile error on ARM ]

Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>