Make usage reporting enums type match (#2069)

This changes the C++ HALUsageReporting enums to have an
explicit type which matches the HAL_Report parameter
types.  In practice this shouldn't change much except
for tooling that might be parsing this header.

hal/src/generate/FRCUsageReporting.h.in

@@ -44,11 +44,11 @@ int64_t HAL_Report(int32_t resource, int32_t instanceNumber, int32_t context,
 
 #ifdef __cplusplus
 namespace HALUsageReporting {
-  typedef enum {
+  enum tResourceType : int32_t {
 ${usage_reporting_types_cpp}
-  } tResourceType;
-  typedef enum {
+  };
+  enum tInstances : int32_t {
 ${usage_reporting_instances_cpp}
-  } tInstances;
+  };
 }
 #endif