Input: fix potential overflows in driver/input/keyboard

Change all sprintfs into snprintfs to make sure we won't stomp on
data adjacent to our buffers.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/keyboard/sunkbd.c b/drivers/input/keyboard/sunkbd.c
index b15b6d8..9dbd7b8 100644
--- a/drivers/input/keyboard/sunkbd.c
+++ b/drivers/input/keyboard/sunkbd.c
@@ -263,7 +263,7 @@
 		goto fail;
 	}
 
-	sprintf(sunkbd->name, "Sun Type %d keyboard", sunkbd->type);
+	snprintf(sunkbd->name, sizeof(sunkbd->name), "Sun Type %d keyboard", sunkbd->type);
 	memcpy(sunkbd->keycode, sunkbd_keycode, sizeof(sunkbd->keycode));
 
 	input_dev->name = sunkbd->name;