[llio] Decouple PCIe reset/timeout logic from open ()

[lerwys]

Issue by lerwys
Wednesday Jul 13, 2016 at 18:09 GMT
Originally opened as lnls-dig/bpm-sw#120

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Problem: On opening a PCIe device, it automatically reset the endpoint. This is wrong as shell programs expect the endpoint to be in the same state for a long time (e.g., registers not resetting)