video: Move and rename DM_HX8238D option

This is actually a panel, not a video device. Rename the option, move it
into the right place and make it depend on PANEL.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index c9fc4a3..44ab9e7 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -163,16 +163,6 @@
 	  With this option you can adjust the text size and use a variety of
 	  fonts. Note that this is noticeably slower than with normal console.
 
-config DM_PANEL_HX8238D
-	bool "Enable Himax HX-8238D LCD driver"
-	depends on DM_VIDEO
-	help
-	  Support for HX-8238D LCD Panel
-	  The  HX8238-D is a single chip controller and driver LSI that
-	  integrates the power circuit.
-	  It can drive a maximum 960x240 dot graphics on a-TFT panel
-	  displays in 16M colors with dithering.
-
 config CONSOLE_TRUETYPE_SIZE
 	int "TrueType font size"
 	depends on CONSOLE_TRUETYPE
@@ -218,6 +208,16 @@
 	  This turns on a simple panel driver that enables a compatible
 	  video panel.
 
+config PANEL_HX8238D
+	bool "Enable Himax HX-8238D LCD driver"
+	depends on PANEL
+	help
+	  Support for HX-8238D LCD Panel
+	  The  HX8238-D is a single chip controller and driver LSI that
+	  integrates the power circuit.
+	  It can drive a maximum 960x240 dot graphics on a-TFT panel
+	  displays in 16M colors with dithering.
+
 source "drivers/video/fonts/Kconfig"
 
 config VIDCONSOLE_AS_LCD