*: add INSERTs to *.src files where appropriate

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/printutils/Config.src b/printutils/Config.src
index 1947896..cc4ab8d 100644
--- a/printutils/Config.src
+++ b/printutils/Config.src
@@ -5,6 +5,8 @@
 
 menu "Print Utilities"
 
+INSERT
+
 config LPD
 	bool "lpd"
 	default y