Improve timeout handling in DwUsbHostDxe

[pbatard]

Networking applications (e.g. iPXE) might experience failures when submitting a bulk IN for the NIC's RX endpoint, because the bulk IN (correctly) times out when no received packet is waiting, but DwUsbHostDxe.c treats this as a fatal error.

With these patches, iPXE is able to successfully download a 128MB test file via HTTP.

Note: This is a merge of:

• tianocore/edk2-platforms@2b728814e510fa9c9bcd5054bd9fd0db08fcb14e
• tianocore/edk2-platforms@24614a0e84261706e7f70e6fe3fec2a1f78faa89
• tianocore/edk2-platforms@77dc30a13b132e815edafcfa36cbd520ceeb87a9

[andreiw]

Awesome. I wonder if this will fix CBI devices like USB floppy...and some continued reports of non-working keyboards.