drm/i915: Don't use __func__ as prefix for drm_dbg_printer

Updated code of drm_dbg_printer() is already printing symbolic
name of the caller like drm_dbg() does.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240517163406.2348-4-michal.wajdeczko@intel.comSigned-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/i915/gt/intel_reset.c

@@ -1025,7 +1025,7 @@ void intel_gt_set_wedged(struct intel_gt *gt)
 
 	if (GEM_SHOW_DEBUG()) {
 		struct drm_printer p = drm_dbg_printer(&gt->i915->drm,
-						       DRM_UT_DRIVER, __func__);
+						       DRM_UT_DRIVER, NULL);
 		struct intel_engine_cs *engine;
 		enum intel_engine_id id;
 

drivers/gpu/drm/i915/gt/selftest_context.c

@@ -286,7 +286,7 @@ static int __live_active_context(struct intel_engine_cs *engine)
 
 	if (intel_engine_pm_is_awake(engine)) {
 		struct drm_printer p = drm_dbg_printer(&engine->i915->drm,
-						       DRM_UT_DRIVER, __func__);
+						       DRM_UT_DRIVER, NULL);
 
 		intel_engine_dump(engine, &p,
 				  "%s is still awake:%d after idle-barriers\n",