cmake HAVE_DAG_GET_STREAM_ERF_TYPES examples

CTSRD-CHERI/cheribsd contrib/libpcap/CMakeLists.txt :2567 

check_function_exists(dag_get_stream_erf_types HAVE_DAG_GET_STREAM_ERF_TYPES)

asset-group/5ghoul-5g-nr-attacks libs/libpcap/CMakeLists.txt :1750 

check_function_exists(dag_get_stream_erf_types
                          HAVE_DAG_GET_STREAM_ERF_TYPES)