Paired bluetooth keyboards lead to system auto resume from S3 when WoL enabled for e1000e

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Hi,

This is actually a continuation of [1] with more findings.
The machine in question is a CFL desktop. The auto resume roughly
happens in 5 ~ 10 mins.

After further digging, I found out that the e1000e and XHCI always
shares the same wakeup count in /sys/kernel/debug/wakeup_sources,
so I did some experiment on e1000e.

Here’s the tricky finding, disable WoL for e1000e can stop the erratic
behaviour - the machine no longer auto resume. One caveat though -
I can no longer wake up the system by pressing the BT keyboard.

No idea where to file the bug so include all three subsystems.

[1] https://www.spinics.net/lists/linux-bluetooth/msg73683.html

Kai-Heng--
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