tests: Reformating due to hexcmp() 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 hexcmp

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/suites/test_suite_pkcs5.function b/tests/suites/test_suite_pkcs5.function
index c334a7a..0b0c937 100644
--- a/tests/suites/test_suite_pkcs5.function
+++ b/tests/suites/test_suite_pkcs5.function
@@ -24,7 +24,8 @@
     TEST_ASSERT( mbedtls_pkcs5_pbkdf2_hmac( &ctx, pw_str->x, pw_str->len, salt_str->x, salt_str->len,
                                      it_cnt, key_len, key ) == 0 );
 
-    TEST_ASSERT( mbedtls_test_hexcmp( key, result_key_string->x, key_len, result_key_string->len ) == 0 );
+    TEST_ASSERT( mbedtls_test_hexcmp( key, result_key_string->x,
+                                      key_len, result_key_string->len ) == 0 );
 
 exit:
     mbedtls_md_free( &ctx );