kernel: mode_beet mode_transport mode_tunnel xfram modules

This adds the new xfrm4_mode_beet, xfrm4_mode_transport,
xfrm4_mode_tunnel and their IPv6 versions on kernel 5.4. These modules
were newly added in kernel 5.2.

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>

package/kernel/linux/modules/netsupport.mk

@@ -267,16 +267,14 @@ endef
 
 $(eval $(call KernelPackage,ipsec))
 
-
-IPSEC4-m:= \
+IPSEC4-m = \
 	ipv4/ah4 \
 	ipv4/esp4 \
-	ipv4/xfrm4_mode_beet \
-	ipv4/xfrm4_mode_transport \
-	ipv4/xfrm4_mode_tunnel \
 	ipv4/xfrm4_tunnel \
 	ipv4/ipcomp \
 
+IPSEC4-m += $(ifeq ($$(strip $$(call CompareKernelPatchVer,$$(KERNEL_PATCHVER),le,5.2))),ipv4/xfrm4_mode_beet ipv4/xfrm4_mode_transport ipv4/xfrm4_mode_tunnel)
+
 define KernelPackage/ipsec4
   SUBMENU:=$(NETWORK_SUPPORT_MENU)
   TITLE:=IPsec related modules (IPv4)
@@ -309,15 +307,14 @@ endef
 $(eval $(call KernelPackage,ipsec4))
 
 
-IPSEC6-m:= \
+IPSEC6-m = \
 	ipv6/ah6 \
 	ipv6/esp6 \
-	ipv6/xfrm6_mode_beet \
-	ipv6/xfrm6_mode_transport \
-	ipv6/xfrm6_mode_tunnel \
 	ipv6/xfrm6_tunnel \
 	ipv6/ipcomp6 \
 
+IPSEC6-m += $(ifeq ($$(strip $$(call CompareKernelPatchVer,$$(KERNEL_PATCHVER),le,5.2))),ipv6/xfrm6_mode_beet ipv6/xfrm6_mode_transport ipv6/xfrm6_mode_tunnel)
+
 define KernelPackage/ipsec6
   SUBMENU:=$(NETWORK_SUPPORT_MENU)
   TITLE:=IPsec related modules (IPv6)