NORbert: FT245, quad SPI, and what's next

So NORbert has an FT245 transport now. It also does dual and quad I/O SPI reads, and the chip identity is runtime configurable. Here's what happened since the last post. FT245 via FT2232H The UART path works but at 2 Mbaud it tops out around 200 KB/s. Loading a 32MB image into SDRAM takes minutes which is annoying when you're developing. We added an alternative transport using the FT2232H in async…