Use driver-wrapper functions for psa_sign/verify_message

To avoid code duplication of the old-style SE interface usage
call psa_driver_wrapper_sign/verify_hash function instead of
the direct internal functions.

Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 5755142..7c95a6c 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -3038,7 +3038,7 @@
             return status;
     }
 
-    return psa_sign_hash_internal(
+    return psa_driver_wrapper_sign_hash(
                 attributes, key_buffer, key_buffer_size,
                 alg, hash, hash_length,
                 signature, signature_size, signature_length );
@@ -3082,7 +3082,7 @@
             return status;
     }
 
-    return psa_verify_hash_internal(
+    return psa_driver_wrapper_verify_hash(
                 attributes, key_buffer, key_buffer_size,
                 alg, hash, hash_length,
                 signature, signature_length );