HID: cp2112: Use sysfs_emit() to instead of scnprintf()

Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230703185222.50554-11-andriy.shevchenko@linux.intel.comSigned-off-by: Benjamin Tissoires <bentiss@kernel.org>

drivers/hid/hid-cp2112.c

@@ -893,7 +893,7 @@ static ssize_t name##_show(struct device *kdev, \
 	int ret = cp2112_get_usb_config(hdev, &cfg); \
 	if (ret) \
 		return ret; \
-	return scnprintf(buf, PAGE_SIZE, format, ##__VA_ARGS__); \
+	return sysfs_emit(buf, format, ##__VA_ARGS__); \
 } \
 static DEVICE_ATTR_RW(name);