platform/x86: Simplify getting .drvdata

We should get drvdata 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>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index a32c5c0..ef87e78 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -1862,8 +1862,7 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
 				    struct attribute *attr, int idx)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
-	struct platform_device *pdev = to_platform_device(dev);
-	struct asus_wmi *asus = platform_get_drvdata(pdev);
+	struct asus_wmi *asus = dev_get_drvdata(dev);
 	bool ok = true;
 	int devid = -1;