netfilter: correct some dependencies

nf-nathelper-extra and nf-conntrack-netlink had iptables related
dependencies, yet, when looking for the respective kernel symbols and
checking it's dependencies it was confirmed that iptables wasn't
required and that these were either it's own moodule or tool independent
(nftables or iptables).

Correct these and make sure no unneeded extras are pulled in.

Signed-off-by: Tiago Gaspar <tiagogaspar8@gmail.com>

package/kernel/linux/modules/netfilter.mk

@@ -542,7 +542,7 @@ define KernelPackage/nf-nathelper-extra
   KCONFIG:=$(KCONFIG_NF_NATHELPER_EXTRA)
   FILES:=$(foreach mod,$(NF_NATHELPER_EXTRA-m),$(LINUX_DIR)/net/$(mod).ko)
   AUTOLOAD:=$(call AutoProbe,$(notdir $(NF_NATHELPER_EXTRA-m)))
-  DEPENDS:=+kmod-nf-nat +kmod-lib-textsearch +kmod-ipt-raw +kmod-asn1-decoder
+  DEPENDS:=+kmod-nf-nat +kmod-lib-textsearch +kmod-asn1-decoder
 endef
 
 define KernelPackage/nf-nathelper-extra/description
@@ -1004,7 +1004,7 @@ define KernelPackage/nf-conntrack-netlink
   FILES:=$(LINUX_DIR)/net/netfilter/nf_conntrack_netlink.ko
   KCONFIG:=CONFIG_NF_CT_NETLINK CONFIG_NF_CONNTRACK_EVENTS=y CONFIG_NETFILTER_NETLINK_GLUE_CT=y
   AUTOLOAD:=$(call AutoProbe,nf_conntrack_netlink)
-  $(call AddDepends/nfnetlink,+kmod-ipt-conntrack)
+  $(call AddDepends/nfnetlink,+kmod-nf-conntrack)
 endef
 
 define KernelPackage/nf-conntrack-netlink/description