SPINEL_PROP_THREAD_NEIGHBOR_TABLE value

Thread Neighbor Table Format: `A(t(ESLCcCbLLc))` - Read only Data per item is: `E`: Extended address `S`: RLOC16 `L`: Age (in seconds) `C`: Link Quality In `c`: Average RSS (in dBm) `C`: Mode (bit-flags) `b`: `true` if neighbor is a child, `false` otherwise. `L`: Link Frame Counter `L`: MLE Frame Counter `c`: The last RSSI (in dBm)