Map the reserved Mbed TLS error value in PSA

The natural choice would be to map it to PSA_ERROR_GENERIC_ERROR.
However, PSA initialises return values to PSA_ERROR_CORRUPTION_DETECTED
and it would be best to align this behaviour.

Since Mbed Crypto is going to initialise return values to
MBEDTLS_ERR_GENERIC_ERROR and therefore it is best to map these to each
other.

Author: yanesca

library/psa_crypto.c

@@ -351,6 +351,14 @@ static psa_status_t mbedtls_to_psa_error( int ret )
             return( PSA_ERROR_INSUFFICIENT_MEMORY );
         case MBEDTLS_ERR_ECP_HW_ACCEL_FAILED:
             return( PSA_ERROR_HARDWARE_FAILURE );
+        /*
+         * Mbed Crypto return values are initialised to
+         * MBEDTLS_ERR_GENERIC_ERROR.  PSA return valuse are initialised to
+         * PSA_ERROR_CORRUPTION_DETECTED.  We are mapping these to each other
+         * to align this behaviour.
+         */
+        case MBEDTLS_ERR_GENERIC_ERROR:
+            return( PSA_ERROR_CORRUPTION_DETECTED );
 
         default:
             return( PSA_ERROR_GENERIC_ERROR );