don't use serialized hdnode

protob/messages.proto

@@ -331,7 +331,7 @@ message DebugLinkState {
 	optional bytes matrix = 3;				// Current PIN matrix
 	optional bytes mnemonic = 4;				// current mnemonic format
 	optional HDNodeType node = 5;				// current node (BIP32 format)
-//	optional bytes state = 6 [(binary) = true];
+	optional bool passphrase_protection = 6;
 }
 
 // Ask device to shutdown/restart

protob/storage.proto

@@ -10,7 +10,7 @@ import "types.proto";
 
 message Storage {
 	required uint32 version = 1;
-	optional bytes node_serialized = 2 [(binary) = true];
+	optional HDNodeType node = 2;
 	optional bytes mnemonic = 3 [(binary) = true];
 	optional bool passphrase_protection = 4;	// whether node_serialized or mnemonic are encrypted (protected by passphrase)
 	optional uint32 pin_failed_attempts = 5;