tests: Reformating due to unhexify_alloc() 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 unhexify_alloc

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/suites/test_suite_aes.function b/tests/suites/test_suite_aes.function
index 887cee8..c2b4978 100644
--- a/tests/suites/test_suite_aes.function
+++ b/tests/suites/test_suite_aes.function
@@ -119,7 +119,8 @@
 
     mbedtls_aes_xts_init( &ctx );
 
-    data_unit = mbedtls_test_unhexify_alloc( hex_data_unit_string, &data_unit_len );
+    data_unit = mbedtls_test_unhexify_alloc( hex_data_unit_string,
+                                             &data_unit_len );
     TEST_ASSERT( data_unit_len == AES_BLOCK_SIZE );
 
     key = mbedtls_test_unhexify_alloc( hex_key_string, &key_len );
@@ -162,7 +163,8 @@
 
     mbedtls_aes_xts_init( &ctx );
 
-    data_unit = mbedtls_test_unhexify_alloc( hex_data_unit_string, &data_unit_len );
+    data_unit = mbedtls_test_unhexify_alloc( hex_data_unit_string,
+                                             &data_unit_len );
     TEST_ASSERT( data_unit_len == AES_BLOCK_SIZE );
 
     key = mbedtls_test_unhexify_alloc( hex_key_string, &key_len );