PCIE preset no signal

Hi Nvidia,

We’re testing pcie compliance.

I add 319ad28_ok.diff and 0001-disabling-the-spread-Spectrum.patch to kernel and dts.

In Gen3 8G test.

In PCIE0 (x4), when we switch preset, the signal will loss in p3, p7 ,p9. But it can switch to p10.

In PCIE2 (x1), when we switch preset, the signal will loss in p3, p7. But it can switch to p10.

In PCIE1 (x1), it can switch to p3.