kernel: netfilter: reuse kconfig and files info from include dir

Less chance of missing out kconfig symbols at least

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

package/kernel/linux/modules/netfilter.mk

@@ -245,7 +245,7 @@ $(eval $(call KernelPackage,ipt-filter))
 
 define KernelPackage/ipt-offload
   TITLE:=Netfilter routing/NAT offload support
-  KCONFIG:=CONFIG_NETFILTER_XT_TARGET_FLOWOFFLOAD
+  KCONFIG:=$(KCONFIG_IPT_FLOW)
   FILES:=$(foreach mod,$(IPT_FLOW-m),$(LINUX_DIR)/net/$(mod).ko)
   AUTOLOAD:=$(call AutoProbe,$(notdir $(IPT_FLOW-m)))
   $(call AddDepends/ipt,+kmod-nf-flow)
@@ -646,13 +646,8 @@ $(eval $(call KernelPackage,ipt-led))
 define KernelPackage/ipt-tproxy
   TITLE:=Transparent proxying support
   DEPENDS+=+kmod-ipt-conntrack +IPV6:kmod-nf-conntrack6 +IPV6:kmod-ip6tables
-  KCONFIG:= \
-  	CONFIG_NF_SOCKET_IPV4 \
-  	CONFIG_NF_SOCKET_IPV6 \
-  	CONFIG_NETFILTER_XT_MATCH_SOCKET \
-  	CONFIG_NETFILTER_XT_TARGET_TPROXY
-  FILES:= \
-  	$(foreach mod,$(IPT_TPROXY-m),$(LINUX_DIR)/net/$(mod).ko)
+  KCONFIG:=$(KCONFIG_IPT_TPROXY)
+  FILES:=$(foreach mod,$(IPT_TPROXY-m),$(LINUX_DIR)/net/$(mod).ko)
   AUTOLOAD:=$(call AutoProbe,$(notdir $(IPT_TPROXY-m)))
   $(call AddDepends/ipt)
 endef
@@ -666,11 +661,8 @@ $(eval $(call KernelPackage,ipt-tproxy))
 define KernelPackage/ipt-tee
   TITLE:=TEE support
   DEPENDS:=+kmod-ipt-conntrack
-  KCONFIG:= \
-  	CONFIG_NETFILTER_XT_TARGET_TEE
-  FILES:= \
-  	$(LINUX_DIR)/net/netfilter/xt_TEE.ko \
-  	$(foreach mod,$(IPT_TEE-m),$(LINUX_DIR)/net/$(mod).ko)
+  KCONFIG:=$(KCONFIG_IPT_TEE)
+  FILES:=$(foreach mod,$(IPT_TEE-m),$(LINUX_DIR)/net/$(mod).ko)
   AUTOLOAD:=$(call AutoProbe,$(notdir nf_tee $(IPT_TEE-m)))
   $(call AddDepends/ipt)
 endef
@@ -684,11 +676,8 @@ $(eval $(call KernelPackage,ipt-tee))
 
 define KernelPackage/ipt-u32
   TITLE:=U32 support
-  KCONFIG:= \
-  	CONFIG_NETFILTER_XT_MATCH_U32
-  FILES:= \
-  	$(LINUX_DIR)/net/netfilter/xt_u32.ko \
-  	$(foreach mod,$(IPT_U32-m),$(LINUX_DIR)/net/$(mod).ko)
+  KCONFIG:=$(KCONFIG_IPT_U32)
+  FILES:=$(foreach mod,$(IPT_U32-m),$(LINUX_DIR)/net/$(mod).ko)
   AUTOLOAD:=$(call AutoProbe,$(notdir nf_tee $(IPT_U32-m)))
   $(call AddDepends/ipt)
 endef
@@ -701,11 +690,8 @@ $(eval $(call KernelPackage,ipt-u32))
 
 define KernelPackage/ipt-checksum
   TITLE:=CHECKSUM support
-  KCONFIG:= \
-  	CONFIG_NETFILTER_XT_TARGET_CHECKSUM
-  FILES:= \
-  	$(LINUX_DIR)/net/netfilter/xt_CHECKSUM.ko \
-  	$(foreach mod,$(IPT_CHECKSUM-m),$(LINUX_DIR)/net/$(mod).ko)
+  KCONFIG:=$(KCONFIG_IPT_CHECKSUM)
+  FILES:=$(foreach mod,$(IPT_CHECKSUM-m),$(LINUX_DIR)/net/$(mod).ko)
   AUTOLOAD:=$(call AutoProbe,$(notdir $(IPT_CHECKSUM-m)))
   $(call AddDepends/ipt)
 endef