staging: ipx: depends on NET

IPX depends on NET, so add that to the Kconfig file.

Fixes Kconfig warning and build errors:

warning: (IPX) selects LLC which has unmet direct dependencies (NET)
and 94 "undefined reference" build errors.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ipx/Kconfig

@@ -3,6 +3,7 @@
 #
 config IPX
 	tristate "The IPX protocol"
+	depends on NET
 	select LLC
 	---help---
 	  This is support for the Novell networking protocol, IPX, commonly