wireguard: selftests: select CONFIG_IP_NF_IPTABLES_LEGACY

This is required on recent kernels, where it is now off by default.
While we're here, fix some stray =m's that were supposed to be =y.

Signed-off-by: Jason A. Donenfeld <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: zx2c4

tools/testing/selftests/wireguard/qemu/kernel.config

@@ -20,9 +20,10 @@ CONFIG_NETFILTER_XTABLES_LEGACY=y
 CONFIG_NETFILTER_XT_NAT=y
 CONFIG_NETFILTER_XT_MATCH_LENGTH=y
 CONFIG_NETFILTER_XT_MARK=y
-CONFIG_NETFILTER_XT_TARGET_MASQUERADE=m
-CONFIG_IP_NF_TARGET_REJECT=m
-CONFIG_IP6_NF_TARGET_REJECT=m
+CONFIG_NETFILTER_XT_TARGET_MASQUERADE=y
+CONFIG_IP_NF_TARGET_REJECT=y
+CONFIG_IP6_NF_TARGET_REJECT=y
+CONFIG_IP_NF_IPTABLES_LEGACY=y
 CONFIG_IP_NF_IPTABLES=y
 CONFIG_IP_NF_FILTER=y
 CONFIG_IP_NF_MANGLE=y