Wrong australian frequencies

[AtoLrn]

There is a problem in the comment and in the order of the frequencies for AS920

The comment is not right for the calculation and so, the order neither.

The fix could be this one:

#ifdef AS920
const unsigned char PROGMEM TinyLoRa::LoRa_Frequency[8][3] = {
    {0xE6, 0x80,
     0x27} // Channel 0 922.000 MHz / 61.035 Hz = 15106087 = 0xE68027
    {0xE6, 0x8C,
     0xF3}, // Channel 1 922.200 MHz / 61.035 Hz = 15109363 = 0xE68CF3
    {0xE6, 0x99,
     0xC0}, // Channel 2 922.400 MHz / 61.035 Hz = 15112640 = 0xE699C0
    {0xE6, 0xA6,
     0x8D}, // Channel 3 922.600 MHz / 61.035 Hz = 15115917 = 0xE6A68D
    {0xE6, 0xB3,
     0x5A}, // Channel 4 922.800 MHz / 61.035 Hz = 15119194 = 0xE6B35A
    {0xE6, 0xC0,
     0x27}, // Channel 5 923.000 MHz / 61.035 Hz = 15122471 = 0xE6C027
    {0xE6, 0xCC,
     0xF4}, // Channel 6 923.200 MHz / 61.035 Hz = 15125748 = 0xE6CCF4
    {0xE6, 0xD9,
     0xC0}, // Channel 7 923.400 MHz / 61.035 Hz = 15129024 = 0xE6D9C0
};
#endif