* Add support for TI TLC59208F
The chip is a 8-BIT FM+ I2C BUS LED DRIVER with
8 open-drain output channels.
Its features include:
- 256 linear levels
- group dimming
- group blinking
- 64 slave addresses
- customizable sub addresses and all call address
- output update on stop or on ACK
- 3.3V or 5V supply with 5V tolerant IO
- no glitch startup
- 50mA / output continuous current up to 17V
* Convert macro to uint8_t
Variables had to be renamed, clang-format would protest against
mixed case in global variable name.
* Change gen-call reset to use the correct i2c bus
