mips: sgi-ip22: Replace "s[n]?printf" with sysfs_emit in sysfs callbacks

Replace open-coded pieces with sysfs_emit() helper in sysfs .show()
callbacks.

Signed-off-by: Paulo Miguel Almeida <[e-mail]>
Reviewed-by: Maciej W. Rozycki <[e-mail]>
Signed-off-by: Thomas Bogendoerfer <[e-mail]>

arch/mips/sgi-ip22/ip22-gio.c

···
 			     char *buf)
 {
 	struct gio_device *gio_dev = to_gio_device(dev);
-	int len = snprintf(buf, PAGE_SIZE, "gio:%x\n", gio_dev->id.id);
 
-	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
+	return sysfs_emit(buf, "gio:%x\n", gio_dev->id.id);
 }
 static DEVICE_ATTR_RO(modalias);
 
···
 	struct gio_device *giodev;
 
 	giodev = to_gio_device(dev);
-	return sprintf(buf, "%s", giodev->name);
+	return sysfs_emit(buf, "%s\n", giodev->name);
 }
 static DEVICE_ATTR_RO(name);
 
···
 	struct gio_device *giodev;
 
 	giodev = to_gio_device(dev);
-	return sprintf(buf, "%x", giodev->id.id);
+	return sysfs_emit(buf, "%x\n", giodev->id.id);
 }
 static DEVICE_ATTR_RO(id);