stv0900 driver test results 8/1/2013 - d3487e0 - au8522 snr readback improvements

    Delsys  Mod     FEC     c/n fail        c/n fail
                            theoretical     measured
    S       QPSK    1/2     2.69
    S       QPSK    2/3     4.36            5.5
    S       QPSK    3/4     5.46            6.6
    S       QPSK    5/6     6.53            8.0
    S       QPSK    7/8     7.24            8.8

    S2      QPSK    3/5     2.23
    S2      QPSK    3/4     4.03
    S2      QPSK    5/6     5.18
    S2      QPSK    6/7                             99w Televisa Mux, 3881 H 30000, oddball FEC for S2?
    S2      QPSK    8/9     6.20
    S2      QPSK    9/10    6.42

    S2      8PSK    3/5     5.50            5.4
    S2      8PSK    2/3     6.6             6.3
    S2      8PSK    3/4     7.91            7.8
    S2      8PSK    5/6     9.35            8.2 to lose it, 9.4 to acquire
    S2      8PSK    8/9     10.69           10.8
    S2      8PSK    9/10    10.98           11.1

    S2      16APSK  2/3
    S2      16APSK  3/4
    S2      16APSK  4/5
    S2      16APSK  5/6
    S2      16APSK  8/9
    S2      16APSK  9/10

    S2      32APSK  3/4
    S2      32APSK  4/5
    S2      32APSK  5/6
    S2      32APSK  8/9
    S2      32APSK  9/10