Fix printf long int compiler error

[M3gaFr3ak]

Makes the printf variable a long int.
This fixes the following compile error

tinyusb/examples/device/uac2_headset/src/main.c: In function 'tud_audio_clock_get_request':
tinyusb/examples/device/uac2_headset/src/main.c:159:40: error: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'uint32_t' {aka 'long unsigned int'} [-Werror=format=]
  159 |       TU_LOG1("Clock get current freq %u\r\n", current_sample_rate);
      |                                       ~^       ~~~~~~~~~~~~~~~~~~~
      |                                        |       |
      |                                        |       uint32_t {aka long unsigned int}
      |                                        unsigned int
      |                                       %lu
compilation terminated due to -Wfatal-errors.

tinyusb/examples/device/uac2_headset/src/main.c: In function 'tud_audio_clock_set_request':
tinyusb/examples/device/uac2_headset/src/main.c:208:39: error: format '%d' expects argument of type 'int', but argument 2 has type 'uint32_t' {aka 'long unsigned int'} [-Werror=format=]
  208 |     TU_LOG1("Clock set current freq: %d\r\n", current_sample_rate);
      |                                      ~^       ~~~~~~~~~~~~~~~~~~~
      |                                       |       |
      |                                       int     uint32_t {aka long unsigned int}
      |                                      %ld
compilation terminated due to -Wfatal-errors.

[hathach]

thank you for your PR