CSRKEY_HW
crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
crom_add_entry(root, CSRKEY_HW, B_CUR_DRIVER_API_VERSION);
crom_add_entry(&root, CSRKEY_HW, __DragonFly_cc_version);
crom_add_entry(&root, CSRKEY_HW, __FreeBSD_version);