PRODINFO: Revamp blanking/write disallow policy. (#913)

* exo/fusee: hookup new prodinfo settings

* fusee: new scheme doesn't need FLAGS_DEFAULT

* fusee: fix c/p errors

* ams.mitm: completely revamp prodinfo backup mechanism

* ams.mitm: Implement revamped blanking/write policy

* strat: make early boot more debuggable

* exo: condense flag logic

stratosphere/ams_mitm/source/amsmitm_initialization.hpp

@@ -19,6 +19,7 @@
 namespace ams::mitm {
 
     void StartInitialize();
+
     bool IsInitialized();
     void WaitInitialized();