rtc: rtc-rx4581: use spi_set_drvdata()

Use the wrapper functions for getting and setting the driver data using
spi_device instead of using dev_{get|set}_drvdata with &spi->dev, so we
can directly pass a struct spi_device.

Signed-off-by: Jingoo Han <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/drivers/rtc/rtc-rx4581.c b/drivers/rtc/rtc-rx4581.c
index d1b88db..84eb08d 100644
--- a/drivers/rtc/rtc-rx4581.c
+++ b/drivers/rtc/rtc-rx4581.c
@@ -278,7 +278,7 @@
 	if (IS_ERR(rtc))
 		return PTR_ERR(rtc);
 
-	dev_set_drvdata(&spi->dev, rtc);
+	spi_set_drvdata(spi, rtc);
 	return 0;
 }