Waveshare WM8960 Audio HAT

[paspo]

If you're using the Waveshare WM8960 Audio HAT, please take these notes into consideration:

• you have no LEDs and the default LED assignments are conflicting with some I2S signals
• the button is on different GPIO

So please use this configuration:

const (
//	no LEDs on this board, these GPIOs are free to use
//      don't use GPIO18 with this board
	OnlineLEDPin       uint = 22
	ParticipantsLEDPin uint = 23
	TransmitLEDPin     uint = 24
//	This is the correct GPIO for the button
	ButtonPin          uint = 17
)

Maybe take into consideration the possibility to not use the LEDs in code.

Also: thanks for talkiepi, it's awesome.