cmd: CMD_CLS should not depend on video

The cls command works fine on the serial console. There is no reason to
let it depend on the availability of video.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index bfa12ce..6f00bd9 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1914,7 +1914,6 @@
 
 config CMD_CLS
 	bool "Enable clear screen command 'cls'"
-	depends on DM_VIDEO || LCD || VIDEO
 	default y if LCD
 	help
 	  Enable the 'cls' command which clears the screen contents