Input: mtouch - switch to use scnprintf() to suppress truncation warning

Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082921.86167-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Author: andy-shev

drivers/input/touchscreen/mtouch.c

@@ -137,7 +137,7 @@ static int mtouch_connect(struct serio *serio, struct serio_driver *drv)
 
 	mtouch->serio = serio;
 	mtouch->dev = input_dev;
-	snprintf(mtouch->phys, sizeof(mtouch->phys), "%s/input0", serio->phys);
+	scnprintf(mtouch->phys, sizeof(mtouch->phys), "%s/input0", serio->phys);
 
 	input_dev->name = "MicroTouch Serial TouchScreen";
 	input_dev->phys = mtouch->phys;