[ARM] S3C24XX: Serial driver debug depends on DEBUG_LL

The SERIAL_SAMSUNG_DEBUG used printascii() to avoid debugging
through itself when selected as a console. Disable this option
when DEBUG_LL is not set (printascii is unavailable).

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index db783b7..c94d3c4 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -457,7 +457,7 @@
 
 config SERIAL_SAMSUNG_DEBUG
 	bool "Samsung SoC serial debug"
-	depends on SERIAL_SAMSUNG
+	depends on SERIAL_SAMSUNG && DEBUG_LL
 	help
 	  Add support for debugging the serial driver. Since this is
 	  generally being used as a console, we use our own output