generic: fixes 6.1 nf-flow support with fw3

Fixes: coolsnowwolf#11325

target/linux/generic/hack-6.1/650-netfilter-add-xt_FLOWOFFLOAD-target.patch

@@ -8,7 +8,30 @@ Signed-off-by: Felix Fietkau <[email protected]>
 
 --- a/net/netfilter/Kconfig
 +++ b/net/netfilter/Kconfig
-@@ -1023,6 +1023,15 @@ config NETFILTER_XT_TARGET_NOTRACK
+@@ -712,8 +712,6 @@ config NFT_REJECT_NETDEV
+
+ endif # NF_TABLES_NETDEV
+
+-endif # NF_TABLES
+-
+ config NF_FLOW_TABLE_INET
+ 	tristate "Netfilter flow table mixed IPv4/IPv6 module"
+ 	depends on NF_FLOW_TABLE
+@@ -722,11 +720,12 @@ config NF_FLOW_TABLE_INET
+
+ 	  To compile it as a module, choose M here.
+
++endif # NF_TABLES
++
+ config NF_FLOW_TABLE
+ 	tristate "Netfilter flow table module"
+ 	depends on NETFILTER_INGRESS
+ 	depends on NF_CONNTRACK
+-	depends on NF_TABLES
+ 	help
+ 	  This option adds the flow table core infrastructure.
+
+@@ -1023,6 +1022,15 @@ config NETFILTER_XT_TARGET_NOTRACK
  	depends on NETFILTER_ADVANCED
  	select NETFILTER_XT_TARGET_CT