netdev - net/usb: Use irqsave in USB's complete callback

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Message-Id: <20180620193121.24967-1-bigeasy@linutronix.de>
Date:   Wed, 20 Jun 2018 21:31:16 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     netdev@...r.kernel.org
Cc:     linux-usb@...r.kernel.org, tglx@...utronix.de,
        "David S. Miller" <davem@...emloft.net>
Subject: net/usb: Use irqsave in USB's complete callback

This is about using _irqsave() primitives in the completion callback in
order to get rid of local_irq_save() in __usb_hcd_giveback_urb().

Sebastian