drm/i915/pmu: prefer struct drm_device based logging

Prefer struct drm_device based logging over struct device based logging.

No functional changes.

Cc: Wambui Karuga <[e-mail]>
Reviewed-by: Wambui Karuga <[e-mail]>
Signed-off-by: Jani Nikula <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/i915/i915_pmu.c

···
 	int ret = -ENOMEM;
 
 	if (INTEL_GEN(i915) <= 2) {
-		dev_info(i915->drm.dev, "PMU not supported for this GPU.");
+		drm_info(&i915->drm, "PMU not supported for this GPU.");
 		return;
 	}
 
···
 	if (!is_igp(i915))
 		kfree(pmu->name);
 err:
-	dev_notice(i915->drm.dev, "Failed to register PMU!\n");
+	drm_notice(&i915->drm, "Failed to register PMU!\n");
 }
 
 void i915_pmu_unregister(struct drm_i915_private *i915)