netkittelnet: fix typo introduced in 8d65822f9d

Netkittelnet needs a toolchain WITH RPC support, not WITHOUT.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/netkittelnet/Config.in

@@ -1,6 +1,6 @@
 config BR2_PACKAGE_NETKITTELNET
 	bool "netkittelnet"
-	depends on !BR2_INET_RPC
+	depends on BR2_INET_RPC
 	select BR2_PACKAGE_NETKITBASE
 	help
 	  Standard Linux telnet client and server.