Set default the Bluetooth class of device

The class of device is a string with a list of uint8t values:
90,66,12

The meaning is as follows:
{Service Field, Major class, Minor class}

Service Field: 0x5A -> 90
    Bit 14: LE audio
    Bit 17: Networking
    Bit 19: Capturing
    Bit 20: Object Transfer
    Bit 22: Telephony
MAJOR_CLASS: 0x42 -> 66 (Phone)
MINOR_CLASS: 0x0C -> 12 (Smart Phone)

Bug: 268583002
Test: Check COD

Change-Id: I46b62aa06296f3b565cd35da5d6742ab0b30fab8