Std. watchdog & MCUSR init; Test-pattern orientation; Remove SPI 2x flag
Std. watchdog & MCUSR init; Test-pattern orientation; Remove SPI 2x flag

Adds standard MCUSR and watchdog initialization
Adds and alternates orientation of animated test pattern
Removes SPI 2x config since it wasn't used anyway, and 2x is too fast

dbacon/avr-tlc5940