bhnd_nvram_tlv_next_env
while ((env = bhnd_nvram_tlv_next_env(tlv, &next, NULL)) != NULL) {
env = bhnd_nvram_tlv_next_env(tlv, &io_offset, cookiep);
env = bhnd_nvram_tlv_next_env(tlv, &io_offset, NULL);
env = bhnd_nvram_tlv_next_env(tlv, &io_offset, cookiep);
static struct bhnd_nvram_tlv_env *bhnd_nvram_tlv_next_env(