gpio readall didn't work on the Zero. This fixed that little goof

gpio/readall.c

@@ -289,6 +289,8 @@ static void plus2header (int model)
     printf (" +-----+-----+---------+------+---+--A Plus--+---+------+---------+-----+-----+\n") ;
   else if (model == PI_MODEL_BP)
     printf (" +-----+-----+---------+------+---+--B Plus--+---+------+---------+-----+-----+\n") ;
+  else if (model == PI_MODEL_ZERO)
+    printf (" +-----+-----+---------+------+---+-Pi Zero--+---+------+---------+-----+-----+\n") ;
   else
     printf (" +-----+-----+---------+------+---+---Pi 2---+---+------+---------+-----+-----+\n") ;
 }
@@ -325,7 +327,7 @@ void doReadall (void)
 
   /**/ if ((model == PI_MODEL_A) || (model == PI_MODEL_B))
     abReadall (model, rev) ;
-  else if ((model == PI_MODEL_BP) || (model == PI_MODEL_AP) || (model == PI_MODEL_2))
+  else if ((model == PI_MODEL_BP) || (model == PI_MODEL_AP) || (model == PI_MODEL_2) || (model == PI_MODEL_ZERO))
     piPlusReadall (model) ;
   else if (model == PI_MODEL_CM)
     cmReadall () ;

wiringPi/wiringPi.h

@@ -76,6 +76,9 @@
 #define	PI_MODEL_2		4
 #define	PI_ALPHA		5
 #define	PI_MODEL_CM		6
+#define	PI_MODEL_07		7
+#define	PI_MODEL_08		8
+#define	PI_MODEL_ZERO		9
 
 #define	PI_VERSION_1		0
 #define	PI_VERSION_1_1		1