kernel: add missing config symbol for 3.13.

Signed-off-by: Hauke Mehrtens <[email protected]>

SVN-Revision: 39531

target/linux/generic/config-3.13

@@ -2384,6 +2384,7 @@ CONFIG_NF_NAT_IPV4=m
 # CONFIG_NF_NAT_SIP is not set
 # CONFIG_NF_NAT_SNMP_BASIC is not set
 # CONFIG_NF_NAT_TFTP is not set
+# CONFIG_NF_TABLES is not set
 # CONFIG_NI52 is not set
 # CONFIG_NI65 is not set
 # CONFIG_NILFS2_FS is not set