bluetooth: use proper format for integers (-Wformat)

Properly print signed and unsigned integers.  This fixes warnings like:

    In file included from src/near.h:36,
                     from src/bluetooth.c:32:
    src/bluetooth.c: In function ‘bt_adapter_property_changed’:
    ./include/near/log.h:45:14: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 5 has type ‘int’ [-Werror=format=]
       45 |   near_debug("%s:%s() " fmt, \
          |              ^~~~~~~~~~
    src/bluetooth.c:465:3: note: in expansion of macro ‘DBG’
      465 |   DBG("%s: %x", property, bt_def_oob_data.class_of_device);
          |   ^~~

    In file included from src/near.h:36,
                     from src/bluetooth.c:32:
    src/bluetooth.c: In function ‘bt_adapter_property_changed’:
    ./include/near/log.h:45:14: error: format ‘%u’ expects argument of type ‘unsigned int’, but argument 5 has type ‘int’ [-Werror=format=]
       45 |   near_debug("%s:%s() " fmt, \
          |              ^~~~~~~~~~
    src/bluetooth.c:475:3: note: in expansion of macro ‘DBG’
      475 |   DBG("%s: %u", property, bt_def_oob_data.powered);
          |   ^~~

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
1 file changed