mfd: rtsx_usb: Fix decimal printf format specifiers prefixed with 0x

The prefix suggests the number should be printed in hex, so use
the %x specifier to do that.

Found by using regex suggested by Joe Perches.

Signed-off-by: Hans Wennborg <hans@hanshq.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/rtsx_usb.c b/drivers/mfd/rtsx_usb.c
index 71f387c..9cf98d1 100644
--- a/drivers/mfd/rtsx_usb.c
+++ b/drivers/mfd/rtsx_usb.c
@@ -684,7 +684,7 @@
 	struct rtsx_ucr *ucr =
 		(struct rtsx_ucr *)usb_get_intfdata(intf);
 
-	dev_dbg(&intf->dev, "%s called with pm message 0x%04u\n",
+	dev_dbg(&intf->dev, "%s called with pm message 0x%04x\n",
 			__func__, message.event);
 
 	/*