Input: xen-kbdfront - prefer xenbus_write() over xenbus_printf() where possible

... as being the simpler variant.
Signed-off-by: NJan Beulich <jbeulich@suse.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/misc/xen-kbdfront.c

@@ -130,8 +130,8 @@ static int xenkbd_probe(struct xenbus_device *dev,
 	if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-abs-pointer", "%d", &abs) < 0)
 		abs = 0;
 	if (abs) {
-		ret = xenbus_printf(XBT_NIL, dev->nodename,
-				    "request-abs-pointer", "1");
+		ret = xenbus_write(XBT_NIL, dev->nodename,
+				   "request-abs-pointer", "1");
 		if (ret) {
 			pr_warning("xenkbd: can't request abs-pointer");
 			abs = 0;
@@ -327,8 +327,8 @@ static void xenkbd_backend_changed(struct xenbus_device *dev,
 		if (ret < 0)
 			val = 0;
 		if (val) {
-			ret = xenbus_printf(XBT_NIL, info->xbdev->nodename,
-					    "request-abs-pointer", "1");
+			ret = xenbus_write(XBT_NIL, info->xbdev->nodename,
+					   "request-abs-pointer", "1");
 			if (ret)
 				pr_warning("xenkbd: can't request abs-pointer");
 		}