Add the overlay for the esp-wrover-kit, to drive a character display
based on HD44780 chipset using the I2C bus gpio controller PCF8574.
Signed-off-by: Marek Matej <marek.matej@espressif.com>
Adds a simple auxdisplay sample which outputs hello world and the
name of the board. A sample overlay is provided for the
nucleo_f746zg board with a Hitachi HD44780-compatible display.
Signed-off-by: Jamie McCrae <spam@helper3000.net>