Support for "STM32+Audio" v2-1 firmware

[Azq2]

Why?
Flashing "STM32+Audio" is only way for have St-link v2-1 with UART on stm32f103c8.
Other firmwares can't be flashed with ST Utils ("firmware is too big").

$ lsusb
...
Bus 002 Device 098: ID 0483:374a STMicroelectronics
...

Brefore patch:

$ sudo st-info --probe
Found 0 stlink programmers

After patch:

$ sudo st-info --probe
Found 1 stlink programmers
 serial: ...deleted...
openocd: "...deleted..."
  flash: 65536 (pagesize: 1024)
   sram: 20480
 chipid: 0x0410
  descr: F1 Medium-density device

[Azq2]

Nobody cares =\

[slyshykO]

Nobody cares =\

Please, be patient.

[xor-gate]

@Azq2 thanks for the contribution, you could have send a ping @xor-gate. Of course people care, or else the project would not exist. Keep the PRs coming 👍