drm/i915: Use drm_dbg for rpm logging

RPM suspend/resume also supported on gfx platforms which doesn't have
kms support and even on platforms without any connected display panel.
There is no good reason to log rpm suspend/resume debug message with
drm_dbg_kms() therefore changing it to drm_dbg().
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220511130455.22028-1-anshuman.gupta@intel.com

drivers/gpu/drm/i915/i915_driver.c

@@ -1547,7 +1547,7 @@ static int intel_runtime_suspend(struct device *kdev)
 	if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
 		return -ENODEV;
 
-	drm_dbg_kms(&dev_priv->drm, "Suspending device\n");
+	drm_dbg(&dev_priv->drm, "Suspending device\n");
 
 	disable_rpm_wakeref_asserts(rpm);
 
@@ -1623,7 +1623,7 @@ static int intel_runtime_suspend(struct device *kdev)
 	if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
 		intel_hpd_poll_enable(dev_priv);
 
-	drm_dbg_kms(&dev_priv->drm, "Device suspended\n");
+	drm_dbg(&dev_priv->drm, "Device suspended\n");
 	return 0;
 }
 
@@ -1637,7 +1637,7 @@ static int intel_runtime_resume(struct device *kdev)
 	if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
 		return -ENODEV;
 
-	drm_dbg_kms(&dev_priv->drm, "Resuming device\n");
+	drm_dbg(&dev_priv->drm, "Resuming device\n");
 
 	drm_WARN_ON_ONCE(&dev_priv->drm, atomic_read(&rpm->wakeref_count));
 	disable_rpm_wakeref_asserts(rpm);
@@ -1681,7 +1681,7 @@ static int intel_runtime_resume(struct device *kdev)
 		drm_err(&dev_priv->drm,
 			"Runtime resume failed, disabling it (%d)\n", ret);
 	else
-		drm_dbg_kms(&dev_priv->drm, "Device resumed\n");
+		drm_dbg(&dev_priv->drm, "Device resumed\n");
 
 	return ret;
 }