mfd: intel_soc_pmic_bxtwc: Convert to use platform_get/set_drvdata()

We have the specific helpers for platform device to set and get
its driver data. Convert driver to use them instead of open coded
variants.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220628221747.33956-3-andriy.shevchenko@linux.intel.com

drivers/mfd/intel_soc_pmic_bxtwc.c

@@ -457,7 +457,7 @@ static int bxtwc_probe(struct platform_device *pdev)
 		return ret;
 	pmic->irq = ret;
 
-	dev_set_drvdata(&pdev->dev, pmic);
+	platform_set_drvdata(pdev, pmic);
 	pmic->dev = &pdev->dev;
 
 	pmic->scu = devm_intel_scu_ipc_dev_get(&pdev->dev);
@@ -574,7 +574,7 @@ static int bxtwc_probe(struct platform_device *pdev)
 
 static void bxtwc_shutdown(struct platform_device *pdev)
 {
-	struct intel_soc_pmic *pmic = dev_get_drvdata(&pdev->dev);
+	struct intel_soc_pmic *pmic = platform_get_drvdata(pdev);
 
 	disable_irq(pmic->irq);
 }