driver core: auxiliary bus: Add driver data helpers

Adds get/set driver data helpers for auxiliary devices.
Reviewed-by: NMark Gross <markgross@kernel.org>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NDavid E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20211208015015.891275-3-david.e.box@linux.intel.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

include/linux/auxiliary_bus.h

@@ -188,6 +188,16 @@ struct auxiliary_driver {
 	const struct auxiliary_device_id *id_table;
 };
 
+static inline void *auxiliary_get_drvdata(struct auxiliary_device *auxdev)
+{
+	return dev_get_drvdata(&auxdev->dev);
+}
+
+static inline void auxiliary_set_drvdata(struct auxiliary_device *auxdev, void *data)
+{
+	dev_set_drvdata(&auxdev->dev, data);
+}
+
 static inline struct auxiliary_device *to_auxiliary_dev(struct device *dev)
 {
 	return container_of(dev, struct auxiliary_device, dev);