Fix module initialization when more than 1 class is in use

Now that we're using enums for module types, it makes no sense to bother keeping
a list of module types when we know exactly how many they are.

Switching to an array simplifies the code and eliminates the aforementioned bug.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

module.h

@@ -17,12 +17,13 @@
 /* This should not be used directly.  Use block_init etc. instead.  */
 #define module_init(function, type)                                         \
 static void __attribute__((constructor)) do_qemu_init_ ## function(void) {  \
-   register_module_init(function, type);                                    \
+    register_module_init(function, type);                                   \
 }
 
 typedef enum {
     MODULE_INIT_BLOCK,
-    MODULE_INIT_DEVICE
+    MODULE_INIT_DEVICE,
+    MODULE_INIT_MAX
 } module_init_type;
 
 #define block_init(function) module_init(function, MODULE_INIT_BLOCK)