Upstream linux 5.1 commit d1aca8ab ("netfilter: nat: merge ipv4 and ipv6
masquerade functionality") replaces the following 2 options
- CONFIG_NF_NAT_MASQUERADE_IPV4
- CONFIG_NF_NAT_MASQUERADE_IPV6
with CONFIG_NF_NAT_MASQUERADE. The new option is one without prompt and
will be selected by CONFIG_NETFILTER_XT_TARGET_MASQUERADE introduced
still later in 5.2.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>