TM4C - USE_PIN_MUX
TM4C - platform - i2c types, more array bounds checks, USE_PIN_MUX
TM4C - platform - remember assertion failures and display when have console
TM4C - platform - SPI - configure pin in setup rather than init
(only configure pins for SPIs going to use)
TM4C - array bounds checkig - in setup rather than init
add more checks
TM4C - platform - USB - add pin, peripheral setup
TM4C - unlock NMI - adapt code so compiles on 1294
TM4C - net - remove unused variable ui8PHYAddr
add default MAC address