First, please boot up the target board with /usr/local/dpdk/dpaa/fsl-ls1046a-rdb-usdpaa-shared.dtb
Then configure fmc with
fmc -c /usr/local/dpdk/dpaa/usdpaa_config_ls1046_shared_24g.xml -p /usr/local/dpdk/dpaa/usdpaa_policy_24g_classif_udp_ipsec_1queue.xml -a