[PATCH, doc] missing option in list

[Ralf Wildenhues]

Joerg notified me of this doc glitch.  I think it is obvious,
but I'll wait a few hours before applying it in case anybody
wants to comment.

Cheers,
Ralf

gcc/ChangeLog:
2009-06-12  Joerg Sonnenberger  <joerg@britannica.bec.de>

	* doc/invoke.texi: Add missing option -Wp,OPTION in list.

Index: invoke.texi
===================================================================
--- invoke.texi	(revision 146991)
+++ invoke.texi	(working copy)
@@ -7860,6 +7860,7 @@
 compilation.
 
 @table @gcctabopt
+@item -Wp,@var{option}
 @opindex Wp
 You can use @option{-Wp,@var{option}} to bypass the compiler driver
 and pass @var{option} directly through to the preprocessor.  If