fusee/exo: implement the usual changes for new firmware support

exosphere/program/source/boot/secmon_package2.cpp

@@ -94,7 +94,7 @@ namespace ams::secmon::boot {
         }
 
         /* Check that the key generation is one that we can use. */
-        static_assert(pkg1::KeyGeneration_Count == 15);
+        static_assert(pkg1::KeyGeneration_Count == 16);
         if (key_generation >= pkg1::KeyGeneration_Count) {
             return false;
         }