netdev - r8169: enable ASPM states via sysfs

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Date:   Mon, 21 Oct 2019 20:54:41 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: r8169: enable ASPM states via sysfs

So far ASPM is disabled in the r8169 driver due to issues on several
chip version / BIOS version combinations. Commit ad46fe1c7336
("PCI/ASPM: Add sysfs attributes for controlling ASPM link states")
adds the option to enable ASPM states for a device via sysfs
(provided that BIOS allows the OS to control ASPM).
This commit is included in latest linux-next and may be useful for
notebook users to benefit from ASPM power saving.

Heiner