IOS: Correct ES return code names about signatures

-1027 is used when ES cannot find the issuer of a certificate.

-1012 is used when the signature type is invalid.

Source/Core/Core/IOS/Device.h

@@ -44,13 +44,14 @@ enum ReturnCode : s32
   FS_EBUSY = -118,         // Resource busy
   ES_SHORT_READ = -1009,   // Short read
   ES_EIO = -1010,          // Write failure
+  ES_INVALID_SIGNATURE_TYPE = -1012,
   ES_FD_EXHAUSTED = -1016,  // Max of 3 ES handles exceeded
   ES_EINVAL = -1017,        // Invalid argument
   ES_DEVICE_ID_MISMATCH = -1018,
   ES_HASH_MISMATCH = -1022,  // Decrypted content hash doesn't match with the hash from the TMD
   ES_ENOMEM = -1024,         // Alloc failed during request
   ES_EACCES = -1026,         // Incorrect access rights (according to TMD)
-  ES_INVALID_TMD_SIGNATURE_TYPE = -1027,
+  ES_UNKNOWN_ISSUER = -1027,
   ES_NO_TICKET = -1028,
   ES_INVALID_TICKET = -1029,
   IOSC_EACCES = -2000,