Syntax
static esp_ble_mesh_prov_t provision = {
.prov_uuid = dev_uuid,
.prov_unicast_addr = PROV_OWN_ADDR,
.prov_start_address = 0x0002,
.prov_attention = 0x00,
.prov_algorithm = 0x00,
.prov_pub_key_oob = 0x00,
.prov_static_oob_val = NULL,
.prov_static_oob_len = 0x00,
.flags = 0x00,
.iv_index = 0x00,
};