Having -Wincompatible-pointer-types when building with CONFIG_ZMK_USB=y

[mlouielu]

When enabled CONFIG_ZMK_USB=y, the following error -Wincompatible-pointer-types shows:

/zmk/app/src/usb_hid.c: In function ‘get_report_cb’:
/zmk/app/src/usb_hid.c:92:41: error: passing argument 1 of ‘get_keyboard_report’ from incompatible pointer type [-Wincompatible-pointer-types]
   92 |             *data = get_keyboard_report(len);
      |                                         ^~~
      |                                         |
      |                                         int32_t * {aka int *}
compilation terminated due to -Wfatal-errors.

Example

$ echo "CONFIG_ZMK_USB=y" > tests/none/normal/native_posix_64.conf
$ west build --pristine --board native_posix_64 -- -DZMK_CONFIG=tests/none/normal/
...
/zmk/app/src/usb_hid.c:92:41: error: passing argument 1 of ‘get_keyboard_report’ from incompatible pointer type [-Wincompatible-pointer-types]
...