* Nuvoton Display Device Tree

Example:
	
/* Ensure overlay related setting */
&display {
	....	
	overlay-en = <1>; /* Enable overlay function */
	overlay-pixel-fmt = <6>; /* Set RGB888 format */
	overlay-width = <1024>; /* Set overlay resolution width */
	overlay-height = <600>; /* Set overlay resolution height */
	overlay-rect-tlx = <0>; /* Set the starting coordinate of the x-axis */
	overlay-rect-tly = <0>; /* Set the starting coordinate of the y-axis */
	....
};

	