console: kconfig: Drop the redundant VIDEO dependency

The VIDEO dependency is described twice in CONSOLE_MUX.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/common/Kconfig b/common/Kconfig
index 973482f..d103bc6 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -226,7 +226,7 @@
 
 config CONSOLE_MUX
 	bool "Enable console multiplexing"
-	default y if VIDEO || VIDEO || LCD
+	default y if VIDEO || LCD
 	help
 	  This allows multiple devices to be used for each console 'file'.
 	  For example, stdout can be set to go to serial and video.