tests: Reformating due to rnd_* renaming

Command to find the files in which lines have gone
larger than 79 characters due to the renaming:

grep '.\{80\}' \
    `git diff-tree --no-commit-id --name-only -r HEAD` \
    | grep "\<mbedtls_test_rnd_"

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/suites/test_suite_mpi.function b/tests/suites/test_suite_mpi.function
index 02cd1a9..e54aaff 100644
--- a/tests/suites/test_suite_mpi.function
+++ b/tests/suites/test_suite_mpi.function
@@ -240,7 +240,8 @@
                             mbedtls_mpi_exp_mod( &X, &X, &X, NULL, NULL ) );
 
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_MPI_BAD_INPUT_DATA,
-                            mbedtls_mpi_fill_random( NULL, 42, mbedtls_test_rnd_std_rand,
+                            mbedtls_mpi_fill_random( NULL, 42,
+                                                     mbedtls_test_rnd_std_rand,
                                                      NULL ) );
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_MPI_BAD_INPUT_DATA,
                             mbedtls_mpi_fill_random( &X, 42, NULL, NULL ) );
@@ -1244,7 +1245,8 @@
 
     mbedtls_mpi_init( &X );
 
-    my_ret = mbedtls_mpi_gen_prime( &X, bits, flags, mbedtls_test_rnd_std_rand, NULL );
+    my_ret = mbedtls_mpi_gen_prime( &X, bits, flags,
+                                    mbedtls_test_rnd_std_rand, NULL );
     TEST_ASSERT( my_ret == ref_ret );
 
     if( ref_ret == 0 )
@@ -1254,14 +1256,16 @@
         TEST_ASSERT( actual_bits >= (size_t) bits );
         TEST_ASSERT( actual_bits <= (size_t) bits + 1 );
 
-        TEST_ASSERT( mbedtls_mpi_is_prime_ext( &X, 40, mbedtls_test_rnd_std_rand, NULL )
-                     == 0 );
+        TEST_ASSERT( mbedtls_mpi_is_prime_ext( &X, 40,
+                                               mbedtls_test_rnd_std_rand,
+                                               NULL ) == 0 );
         if( flags & MBEDTLS_MPI_GEN_PRIME_FLAG_DH )
         {
             /* X = ( X - 1 ) / 2 */
             TEST_ASSERT( mbedtls_mpi_shift_r( &X, 1 ) == 0 );
-            TEST_ASSERT( mbedtls_mpi_is_prime_ext( &X, 40, mbedtls_test_rnd_std_rand, NULL )
-                         == 0 );
+            TEST_ASSERT( mbedtls_mpi_is_prime_ext( &X, 40,
+                                                   mbedtls_test_rnd_std_rand,
+                                                   NULL ) == 0 );
         }
     }