AM57x USB Advisories

The AM57x Errata (sprz429k) lists the following USB related advisories.

The software workaround for these advisories have been implemented in Linux kernel. The following table shows the first Linux SDK/kernel release which has the workaround implemented.
 * i820: Unexpected USB Link State Value upon U3 Exit by USB3.0 Link
 * i824: USB3.0 Link Cannot Be Established When Suspend Mode is Enabled
 * i845: USB2.0 False Detection of Disconnect Condition
 * i896: USB xHCI Port Disable Feature Does not Work
 * i897: USB xHCI Stop Endpoint Command Does not Work in Certain Circumstances