INT 10 - VIDEO - FLAT-PANEL - BRIGHTNESS CONTROL

	AX = 1E05h
	BH = function
	    bit 7: =1 set brightness, =0 query brightness
	    bits 6-0: reserved (0)
	---if BH bit 7 set---
	BL = new brightness setting (see #00058)
Return: AL = 1Eh if function supported
	    BH = results
		bit 7: query/set (copied from input)
		bits 6-2: reserved (0)
		bit 1: software brightness control is supported
		bit 0: set operation was successful (always clear on get)
	    BL = active brightness setting (see #00058)
Note:	this function operates independently of AX=1E07h
SeeAlso: AX=1E00h,AX=1E04h,AX=1E06h,AX=1E07h