Call software implementation as a driver

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/library/psa_crypto_driver_wrappers.h b/library/psa_crypto_driver_wrappers.h
index b9bb53e..ad16cdd 100644
--- a/library/psa_crypto_driver_wrappers.h
+++ b/library/psa_crypto_driver_wrappers.h
@@ -69,7 +69,7 @@
 
 psa_status_t psa_driver_wrapper_generate_key(
     const psa_key_attributes_t *attributes,
-    psa_key_slot_t *slot );
+    uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length );
 
 /*
  * Cipher functions