Convert CONFIG_VIDEO_CT69000 to Kconfig

This converts the following to Kconfig:
   CONFIG_VIDEO_CT69000

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index d3e0a1a..f43053f 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -493,6 +493,33 @@
 	  erase functions and limited graphics rendition control). Normal
 	  output from U-Boot will pass through this filter.
 
+config VIDEO_CT69000
+	bool "Enable Chips & Technologies 69000 video driver"
+	depends on VIDEO
+	help
+	  This enables a frame buffer driver for the Chips & Technologies
+	  ct69000, a fairly old graphics device (circa 2000) which is used
+	  on some hardware. It operates over the ISA bus, and supports
+	  some acceleration features.
+
+	  For the CT69000 and SMI_LYNXEM drivers, videomode is
+		selected via environment 'videomode'. Two different ways
+		are possible:
+		- "videomode=num"   'num' is a standard LiLo mode numbers.
+		Following standard modes are supported	(* is default):
+
+		      Colors	640x480 800x600 1024x768 1152x864 1280x1024
+		-------------+---------------------------------------------
+		      8 bits |	0x301*	0x303	 0x305	  0x161	    0x307
+		     15 bits |	0x310	0x313	 0x316	  0x162	    0x319
+		     16 bits |	0x311	0x314	 0x317	  0x163	    0x31A
+		     24 bits |	0x312	0x315	 0x318	    ?	    0x31B
+		-------------+---------------------------------------------
+		(i.e. setenv videomode 317; saveenv; reset;)
+
+		- "videomode=bootargs" all the video parameters are parsed
+		from the bootargs. (See drivers/video/videomodes.c)
+
 config LCD
 	bool "Enable legacy LCD support"
 	help