INT 15 - HP OmniShare - Pen Driver - SET THE COMMUNICATION LED STATE            
	AX = BA11h
	BL = new LED state (00h steady, 01h flashing)
Return: CF clear if successful
	CF set on error
Note:	this function is for use by communication software to give visual
	  feedback of active communications even if the display is in standby
	  mode.
SeeAlso: AX=BA10h,AX=BA24h