video: Rename CONFIG_DM_VIDEO to CONFIG_VIDEO

Now that all the old code is gone, rename this option. Driver model
migration is now complete.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 9aac534..3f6bc70 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1877,7 +1877,7 @@
 
 config CMD_BMP
 	bool "Enable 'bmp' command"
-	depends on DM_VIDEO
+	depends on VIDEO
 	help
 	  This provides a way to obtain information about a BMP-format image
 	  and to display it. BMP (which presumably stands for BitMaP) is a
@@ -2163,7 +2163,7 @@
 
 config CMD_VIDCONSOLE
 	bool "lcdputs and setcurs"
-	depends on DM_VIDEO
+	depends on VIDEO
 	default y
 	help
 	  Enabling this will provide 'setcurs' and 'lcdputs' commands which
diff --git a/cmd/bdinfo.c b/cmd/bdinfo.c
index c454e6e..bf002f8 100644
--- a/cmd/bdinfo.c
+++ b/cmd/bdinfo.c
@@ -122,7 +122,7 @@
 	bdinfo_print_num_l("fdt_blob", (ulong)gd->fdt_blob);
 	bdinfo_print_num_l("new_fdt", (ulong)gd->new_fdt);
 	bdinfo_print_num_l("fdt_size", (ulong)gd->fdt_size);
-	if (IS_ENABLED(CONFIG_DM_VIDEO))
+	if (IS_ENABLED(CONFIG_VIDEO))
 		show_video_info();
 #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
 	bdinfo_print_num_l("multi_dtb_fit", (ulong)gd->multi_dtb_fit);
diff --git a/cmd/cls.c b/cmd/cls.c
index ba36220..18643ec 100644
--- a/cmd/cls.c
+++ b/cmd/cls.c
@@ -19,7 +19,7 @@
 
 	/*  Send clear screen and home */
 	printf(CSI "2J" CSI "1;1H");
-	if (CONFIG_IS_ENABLED(DM_VIDEO) && !CONFIG_IS_ENABLED(VIDEO_ANSI)) {
+	if (CONFIG_IS_ENABLED(VIDEO) && !CONFIG_IS_ENABLED(VIDEO_ANSI)) {
 		if (uclass_first_device_err(UCLASS_VIDEO, &dev))
 			return CMD_RET_FAILURE;
 		if (video_clear(dev))