Split out mbedtls_ecp_mod_p448_raw()

Switch testing over to using the generic raw functions.

Signed-off-by: Paul Elliott <paul.elliott@arm.com>
diff --git a/tests/suites/test_suite_ecp.function b/tests/suites/test_suite_ecp.function
index bd0fcf2..9ef35d8 100644
--- a/tests/suites/test_suite_ecp.function
+++ b/tests/suites/test_suite_ecp.function
@@ -1357,6 +1357,13 @@
             curve_func = &mbedtls_ecp_mod_p255_raw;
             break;
 #endif
+#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
+        case MBEDTLS_ECP_DP_CURVE448:
+            limbs = 2 * limbs_N;
+            curve_bits = 448;
+            curve_func = &mbedtls_ecp_mod_p448_raw;
+            break;
+#endif
         default:
             mbedtls_test_fail("Unsupported curve_id", __LINE__, __FILE__);
             goto exit;
@@ -1384,45 +1391,6 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_TEST_HOOKS:MBEDTLS_ECP_DP_CURVE448_ENABLED */
-void ecp_mod_p448(char *input_N,
-                  char *input_X,
-                  char *result)
-{
-    mbedtls_mpi X;
-    mbedtls_mpi N;
-    mbedtls_mpi res;
-
-    mbedtls_mpi_init(&X);
-    mbedtls_mpi_init(&N);
-    mbedtls_mpi_init(&res);
-
-    TEST_EQUAL(mbedtls_test_read_mpi(&X,   input_X), 0);
-    TEST_EQUAL(mbedtls_test_read_mpi(&N,   input_N), 0);
-    TEST_EQUAL(mbedtls_test_read_mpi(&res, result),  0);
-
-    TEST_ASSERT(mbedtls_mpi_core_uint_le_mpi(0, X.p, X.n));
-    TEST_ASSERT(mbedtls_mpi_core_uint_le_mpi(0, N.p, N.n));
-    TEST_ASSERT(mbedtls_mpi_core_uint_le_mpi(0, res.p, res.n));
-
-    size_t limbs = N.n;
-    size_t bytes = limbs * sizeof(mbedtls_mpi_uint);
-
-    TEST_LE_U(X.n, 2 * limbs);
-    TEST_EQUAL(res.n, limbs);
-
-    TEST_EQUAL(mbedtls_ecp_mod_p448(X.p, X.n), 0);
-    TEST_EQUAL(mbedtls_mpi_mod_mpi(&X, &X, &N), 0);
-    TEST_LE_U(mbedtls_mpi_core_bitlen(X.p, X.n), 448);
-    ASSERT_COMPARE(X.p, bytes, res.p, bytes);
-
-exit:
-    mbedtls_mpi_free(&X);
-    mbedtls_mpi_free(&N);
-    mbedtls_mpi_free(&res);
-}
-/* END_CASE */
-
 /* BEGIN_CASE depends_on:MBEDTLS_TEST_HOOKS */
 void ecp_mod_setup(char *input_A, int id, int ctype, int iret)
 {