configs: enable IP_MULTIPLE_TABLES for IPv4 and IPv6

IP policy routing depends on IP_MULTIPLE_TABLES, enable it by default
for IPv4 and IPv6.

Enable CONFIG_IPV6_SUBTREES at the same time, which enables IPv6 routing
by source address or prefix.
Signed-off-by: NXu Yu <xuyu@linux.alibaba.com>
Reviewed-by: NJoseph Qi <joseph.qi@linux.alibaba.com>

config-4.19.y-x86_64

 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 4.19.34 Kernel Configuration
+# Linux/x86 4.19.36 Kernel Configuration
 #
 
 #
@@ -948,7 +948,7 @@ CONFIG_INET=y
 CONFIG_IP_MULTICAST=y
 CONFIG_IP_ADVANCED_ROUTER=y
 # CONFIG_IP_FIB_TRIE_STATS is not set
-# CONFIG_IP_MULTIPLE_TABLES is not set
+CONFIG_IP_MULTIPLE_TABLES=y
 # CONFIG_IP_ROUTE_MULTIPATH is not set
 # CONFIG_IP_ROUTE_VERBOSE is not set
 CONFIG_IP_ROUTE_CLASSID=y
@@ -1017,7 +1017,8 @@ CONFIG_IPV6_SIT=m
 CONFIG_IPV6_NDISC_NODETYPE=y
 CONFIG_IPV6_TUNNEL=m
 CONFIG_IPV6_GRE=m
-# CONFIG_IPV6_MULTIPLE_TABLES is not set
+CONFIG_IPV6_MULTIPLE_TABLES=y
+CONFIG_IPV6_SUBTREES=y
 # CONFIG_IPV6_MROUTE is not set
 # CONFIG_IPV6_SEG6_LWTUNNEL is not set
 # CONFIG_IPV6_SEG6_HMAC is not set
@@ -1529,6 +1530,7 @@ CONFIG_NET_FLOW_LIMIT=y
 # CONFIG_AF_RXRPC is not set
 # CONFIG_AF_KCM is not set
 CONFIG_STREAM_PARSER=m
+CONFIG_FIB_RULES=y
 # CONFIG_WIRELESS is not set
 # CONFIG_WIMAX is not set
 # CONFIG_RFKILL is not set
@@ -1886,6 +1888,7 @@ CONFIG_TAP=y
 CONFIG_VETH=m
 CONFIG_VIRTIO_NET=y
 # CONFIG_NLMON is not set
+# CONFIG_NET_VRF is not set
 # CONFIG_VSOCKMON is not set
 # CONFIG_ARCNET is not set
 

config-4.19.y-x86_64-debug

 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 4.19.34 Kernel Configuration
+# Linux/x86 4.19.36 Kernel Configuration
 #
 
 #
@@ -947,7 +947,7 @@ CONFIG_INET=y
 CONFIG_IP_MULTICAST=y
 CONFIG_IP_ADVANCED_ROUTER=y
 # CONFIG_IP_FIB_TRIE_STATS is not set
-# CONFIG_IP_MULTIPLE_TABLES is not set
+CONFIG_IP_MULTIPLE_TABLES=y
 # CONFIG_IP_ROUTE_MULTIPATH is not set
 # CONFIG_IP_ROUTE_VERBOSE is not set
 CONFIG_IP_ROUTE_CLASSID=y
@@ -1016,7 +1016,8 @@ CONFIG_IPV6_SIT=m
 CONFIG_IPV6_NDISC_NODETYPE=y
 CONFIG_IPV6_TUNNEL=m
 CONFIG_IPV6_GRE=m
-# CONFIG_IPV6_MULTIPLE_TABLES is not set
+CONFIG_IPV6_MULTIPLE_TABLES=y
+CONFIG_IPV6_SUBTREES=y
 # CONFIG_IPV6_MROUTE is not set
 # CONFIG_IPV6_SEG6_LWTUNNEL is not set
 # CONFIG_IPV6_SEG6_HMAC is not set
@@ -1528,6 +1529,7 @@ CONFIG_NET_FLOW_LIMIT=y
 # CONFIG_AF_RXRPC is not set
 # CONFIG_AF_KCM is not set
 CONFIG_STREAM_PARSER=m
+CONFIG_FIB_RULES=y
 # CONFIG_WIRELESS is not set
 # CONFIG_WIMAX is not set
 # CONFIG_RFKILL is not set
@@ -1885,6 +1887,7 @@ CONFIG_TAP=y
 CONFIG_VETH=m
 CONFIG_VIRTIO_NET=y
 # CONFIG_NLMON is not set
+# CONFIG_NET_VRF is not set
 # CONFIG_VSOCKMON is not set
 # CONFIG_ARCNET is not set