PM / Domains: Drop unused parameter in genpd_allocate_dev_data()

The in-parameter struct generic_pm_domain *genpd to
genpd_allocate_dev_data() is unused, so let's drop it.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/base/power/domain.c

@@ -1316,7 +1316,6 @@ EXPORT_SYMBOL_GPL(pm_genpd_syscore_poweron);
 #endif /* CONFIG_PM_SLEEP */
 
 static struct generic_pm_domain_data *genpd_alloc_dev_data(struct device *dev,
-					struct generic_pm_domain *genpd,
 					struct gpd_timing_data *td)
 {
 	struct generic_pm_domain_data *gpd_data;
@@ -1385,7 +1384,7 @@ static int genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
 	if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(dev))
 		return -EINVAL;
 
-	gpd_data = genpd_alloc_dev_data(dev, genpd, td);
+	gpd_data = genpd_alloc_dev_data(dev, td);
 	if (IS_ERR(gpd_data))
 		return PTR_ERR(gpd_data);