enable NF_CONNTRACK_PROCFS for Linux 3.3, required for /proc/net/nf_conntrack (#11339)

SVN-Revision: 31454

target/linux/generic/config-3.3

@@ -1851,7 +1851,7 @@ CONFIG_NFS_V3=y
 # CONFIG_NF_CONNTRACK_MARK is not set
 # CONFIG_NF_CONNTRACK_NETBIOS_NS is not set
 # CONFIG_NF_CONNTRACK_PPTP is not set
-# CONFIG_NF_CONNTRACK_PROCFS is not set
+CONFIG_NF_CONNTRACK_PROCFS=y
 # CONFIG_NF_CONNTRACK_PROC_COMPAT is not set
 # CONFIG_NF_CONNTRACK_RTSP is not set
 # CONFIG_NF_CONNTRACK_SANE is not set