ABC80/max80_fw

kopia lustrzana https://git.zytor.com/abc80/max80/fw.git/

Autor	SHA1 Wiadomość	Data
H. Peter Anvin	4970fb6ef6 rtc: issue dummy clock cycles if SDA appears stuck	3 lat temu
H. Peter Anvin	c26574cc6a i2c: fix spurious Sr condition; revert to 400 kHz	3 lat temu
H. Peter Anvin	6ae39aaf12 Make romcopy device programmable and able to zero memory	3 lat temu
H. Peter Anvin	f6f9bf7ede Add i2c unit	3 lat temu