thermal: zx2967_thermal: simplify getting .driver_data

We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

drivers/thermal/zx2967_thermal.c

@@ -207,8 +207,7 @@ MODULE_DEVICE_TABLE(of, zx2967_thermal_id_table);
 #ifdef CONFIG_PM_SLEEP
 static int zx2967_thermal_suspend(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev);
+	struct zx2967_thermal_priv *priv = dev_get_drvdata(dev);
 
 	if (priv && priv->clk_topcrm)
 		clk_disable_unprepare(priv->clk_topcrm);
@@ -221,8 +220,7 @@ static int zx2967_thermal_suspend(struct device *dev)
 
 static int zx2967_thermal_resume(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev);
+	struct zx2967_thermal_priv *priv = dev_get_drvdata(dev);
 	int error;
 
 	error = clk_prepare_enable(priv->clk_topcrm);