[NETFILTER]: Fix INET=n linking error

Building with INET=n results in

WARNING: "ip_route_output_key" [net/netfilter/nf_conntrack_h323.ko] undefined!

The entire code in net/netfilter is only used for IPv4/IPv6 currently, so
let it depend on INET.

Noticed by Toralf Förster <toralf.foerster@gmx.de>.

Signed-off-by: Patrick McHardy <kaber@trash.net>

---
commit ce95407aa64e1add96db823d0020f68a5941eb9a
tree 44f0eb5164ee3b0029c6da1aa97fd9517bfb2291
parent fe1a4d3f910960f27afaa4e5d10050cf8d2460c6
author Patrick McHardy <kaber@trash.net> Wed, 06 Dec 2006 09:32:05 +0100
committer Patrick McHardy <kaber@trash.net> Wed, 06 Dec 2006 09:32:42 +0100

 net/netfilter/Kconfig |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index 3a66878..1b853c3 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -1,5 +1,5 @@
 menu "Core Netfilter Configuration"
-	depends on NET && NETFILTER
+	depends on NET && INET && NETFILTER
 
 config NETFILTER_NETLINK
        tristate "Netfilter netlink interface"