*: add INSERTs to *.src files where appropriate

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/procps/Config.src b/procps/Config.src
index 01f6b0c..e61de56 100644
--- a/procps/Config.src
+++ b/procps/Config.src
@@ -5,6 +5,8 @@
 
 menu "Process Utilities"
 
+INSERT
+
 config FREE
 	bool "free"
 	default y