Fusee Stage 2: Flesh out Package2 patching (implement decryption, fixing of metadata)

fusee/fusee-secondary/src/key_derivation.c

@@ -1,4 +1,5 @@
 #include "key_derivation.h"
+#include "masterkey.h"
 #include "se.h"
 #include "exocfg.h"
 #include "fuse.h"
@@ -125,6 +126,9 @@ void derive_nx_keydata(u32 target_firmware) {
         default:
             generic_panic();
     }
+    
+    /* Setup master key revision, derive older master keys for use. */
+    mkey_detect_revision();
 }
 
 /* Sets final keyslot flags, for handover to TZ/Exosphere. Setting these will prevent the BPMP from using the device key or master key. */