Code style improvements

Signed-off-by: Archana <archana.madhavan@silabs.com>
diff --git a/library/psa_crypto_driver_wrappers.h b/library/psa_crypto_driver_wrappers.h
index 7c45fbf..c186228 100644
--- a/library/psa_crypto_driver_wrappers.h
+++ b/library/psa_crypto_driver_wrappers.h
@@ -103,7 +103,8 @@
 psa_status_t psa_driver_wrapper_copy_key(
     psa_key_attributes_t *attributes,
     const uint8_t *source_key, size_t source_key_size,
-    uint8_t *target_key_buffer, size_t target_buffer_size, size_t *key_length );
+    uint8_t *target_key_buffer, size_t target_key_buffer_size,
+    size_t *target_key_buffer_length );
 /*
  * Cipher functions
  */