Added PSA_ERROR_STORAGE_FAILURE to psa_export_key
It may be possible that an implementation does not
fetch key material until a command like
this is called and such an error may occur if an
off-chip secure storage dependency may have been wiped.
diff --git a/include/psa/crypto.h b/include/psa/crypto.h
index 2a63098..96ffa0b 100644
--- a/include/psa/crypto.h
+++ b/include/psa/crypto.h
@@ -617,6 +617,7 @@
* \retval #PSA_ERROR_COMMUNICATION_FAILURE
* \retval #PSA_ERROR_HARDWARE_FAILURE
* \retval #PSA_ERROR_CORRUPTION_DETECTED
+ * \retval #PSA_ERROR_STORAGE_FAILURE
* \retval #PSA_ERROR_BAD_STATE
* The library has not been previously initialized by psa_crypto_init().
* It is implementation-dependent whether a failure to initialize