Fix: macro name for "get supported mip versions method" attribute descriptor

Fix: macro name for "get supported mip versions method" attribute descriptor

I tried to use BT_PLUGIN_SINK_COMPONENT_CLASS_GET_SUPPORTED_MIP_VERSIONS_METHOD, I got:

    In file included from /home/simark/src/babeltrace/include/babeltrace2/babeltrace.h:67,
                     from /home/simark/src/babeltrace/src/cpp-common/bt2/plugin-dev.hpp:10,
                     from /home/simark/src/babeltrace/tests/cpp-common/plugin-dev/plugin.cpp:7:
    /home/simark/src/babeltrace/include/babeltrace2/plugin/plugin-dev.h:2214:91: error: ‘BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_GET_SUPPORTED_MIP_VERSIONS’ was not declared in this scope; did you mean ‘BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_GET_SUPPORTED_MIP_VERSIONS_METHOD’?
     2214 |  __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE(sink_get_supported_mip_versions_method, BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_GET_SUPPORTED_MIP_VERSIONS, _plugin_id, _component_class_id, sink, _method)
          |                                                                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /home/simark/src/babeltrace/include/babeltrace2/plugin/plugin-dev.h:2641:11: note: in definition of macro ‘__BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE’
     2641 |   .type = _attr_type,     \
          |           ^~~~~~~~~~
    /home/simark/src/babeltrace/include/babeltrace2/plugin/plugin-dev.h:2224:2: note: in expansion of macro ‘BT_PLUGIN_SINK_COMPONENT_CLASS_GET_SUPPORTED_MIP_VERSIONS_METHOD_WITH_ID’
     2224 |  BT_PLUGIN_SINK_COMPONENT_CLASS_GET_SUPPORTED_MIP_VERSIONS_METHOD_WITH_ID(auto, _name, _method)
          |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /home/simark/src/babeltrace/src/cpp-common/bt2/plugin-dev.hpp:110:5: note: in expansion of macro ‘BT_PLUGIN_SINK_COMPONENT_CLASS_GET_SUPPORTED_MIP_VERSIONS_METHOD’
      110 |     BT_PLUGIN_SINK_COMPONENT_CLASS_GET_SUPPORTED_MIP_VERSIONS_METHOD(                              \
          |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /home/simark/src/babeltrace/tests/cpp-common/plugin-dev/plugin.cpp:19:1: note: in expansion of macro ‘BT_CPP_PLUGIN_SINK_COMPONENT_CLASS_GET_SUPPORTED_MIP_VERSIONS_METHOD’
       19 | BT_CPP_PLUGIN_SINK_COMPONENT_CLASS_GET_SUPPORTED_MIP_VERSIONS_METHOD(the_sink, TheSink);
          | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I think it should be

    BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_GET_SUPPORTED_MIP_VERSIONS_METHOD

instead of

    BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_GET_SUPPORTED_MIP_VERSIONS

Change-Id: I397da2945e3eedcedefe713fbb9a469633c57f7a
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/4750
Tested-by: jenkins <jenkins@lttng.org>
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>