max111x: input field is only used as uint8_t

Signed-off-by: NJuan Quintela <quintela@redhat.com>

hw/max111x.c

@@ -15,7 +15,7 @@ typedef struct {
     uint8_t tb1, rb2, rb3;
     int cycle;
 
-    int input[8];
+    uint8_t input[8];
     int inputs, com;
 } MAX111xState;