[NETFILTER]: Solve Kconfig dependency problem

As suggested by Roman Zippel.

Signed-off-by: Harald Welte <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/ipv4/netfilter/Kconfig

···
 # connection tracking, helpers and protocols
 config IP_NF_CONNTRACK
 	tristate "Connection tracking (required for masq/NAT)"
-	select NETFILTER_NETLINK if IP_NF_CONNTRACK_NETLINK!=n
 	---help---
 	  Connection tracking keeps a record of what packets have passed
 	  through your machine, in order to figure out how they are related
···
 config IP_NF_CONNTRACK_NETLINK
 	tristate 'Connection tracking netlink interface'
 	depends on IP_NF_CONNTRACK && NETFILTER_NETLINK
-	default IP_NF_CONNTRACK if NETFILTER_NETLINK=y
-	default m if NETFILTER_NETLINK=m
+	depends on IP_NF_CONNTRACK!=y || NETFILTER_NETLINK!=m
 	help
 	  This option enables support for a netlink-based userspace interface