EclaireXL

Continuing the theme...

I checked that I can read/write from the spi flash chip. Had to use the altera serial flash loader since the pins are not directly exposed. Turned out I could use the existing spi master I'm using for the SD card, just needed a 2nd chip select line.

• Default settings (when SD card not present or does not have settings file) are loaded from the SPI flash.
• Possible to save settings to all (flash and sd, if file present), or just sd.
• Fix for v1 board (was hanging due to changes in v18 core)