added geode driver

lib/vgadb

@@ -428,6 +428,12 @@ ctlr
 	ctlr=radeon linear=1
 	hwgc=radeonhwgc
 
+ctlr
+	vid=0x1022 did=0x2081 # AMD Geode LX
+	link=vga
+	hwgc=geodehwgc
+	ctlr=geode linear=1
+
 #
 # mode:
 # These entries specify a monitor operating mode.
@@ -1631,3 +1637,18 @@ p109b6=1600x1200		# 75Hz
 # QUXGA		3200x2400	Quad UXGA
 # QUXGA-W	3840x2400	Wide-QUXGA
 #
+
+geode
+	alias=vga
+
+geode=1024x768
+	defaultclock=65
+	shb=1032 ehb=1176 ht=1344
+	shs=1056
+	vrs=771 vre=777 vt=806
+	hsync=- vsync=-
+
+geode=1280x1024
+	defaultclock=108
+	shb=1312 ehb=1496 ht=1720
+	vrs=1025 vre=1028 vt=1074