treewide: Add SpinalHDL USB 1.1 controller #91
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- Reduces the internal buffer size from 2kB to 1088 byte minimum is 1023 + DMA_width/8 byte, the max size of a packet with overhead for alignment - BufferCC clock domain crossings for proper constraints
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Adds the SpinalHDL USB 1.1 controller.
ToDo:
Future stuff: