Added the file for RGB2HDMI

sw/rgb2hdmi/ABC800.txt

@@ -0,0 +1,6 @@
+sampling=7,7,7,7,7,7,7,0,2,0,6,0,0,0,0,0,0,5,0,0,100,256,100,256,100,256,256,256
+geometry=140,58,504,204,536,274,3,5,0,1,12000000,768,5000,314,0,0,0
+brightness=113
+ffosd_overlay=1
+scanline_level=0
+powerup_message=0