forked from Makuna/NeoPixelBus
* Renamed all of the SPI buses and provided classes for all of the valid combinations of bus and bit width * Updated dotstar dma spi example to use new names and to work on all 4 supported esp32 variants
* Renamed all of the SPI buses and provided classes for all of the valid combinations of bus and bit width * Updated dotstar dma spi example to use new names and to work on all 4 supported esp32 variants