[PKT_SCHED]: Make TEXTSEARCH* options only selected.

Do not present these confusing new options to the user
unless he picked some facility that makes use of it,
such as NET_EMATCH_TEXT.

Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/Kconfig

@@ -453,10 +453,11 @@ config NET_EMATCH_TEXT
 	tristate "Textsearch"
 	depends on NET_EMATCH
 	select TEXTSEARCH
+	select TEXTSEARCH_KMP
+	select TEXTSEARCH_FSM
 	---help---
 	  Say Y here if you want to be ablt to classify packets based on
-	  textsearch comparisons. Please select the appropriate textsearch
-	  algorithms in the Library section.
+	  textsearch comparisons.
 
 	  To compile this code as a module, choose M here: the
 	  module will be called em_text.