Use SSL error codes

The `psa_ssl_status_to_mbedtls` function is not only used for
cipher operations so transalte to TLS error codes.

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index eb3f2e9..df4835b 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -2132,9 +2132,9 @@
         case PSA_SUCCESS:
             return( 0 );
         case PSA_ERROR_INSUFFICIENT_MEMORY:
-            return( MBEDTLS_ERR_CIPHER_ALLOC_FAILED );
+            return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
         case PSA_ERROR_NOT_SUPPORTED:
-            return( MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE );
+            return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
         case PSA_ERROR_INVALID_SIGNATURE:
             return( MBEDTLS_ERR_SSL_INVALID_MAC );
         case PSA_ERROR_INVALID_ARGUMENT: