Reformat test harness code (#940)

* Reformat common help text

Signed-off-by: Stuart Brady <stuart.brady@arm.com>

* Reformat test harness code

This goes part of the way to fixing issue #625.

Signed-off-by: Stuart Brady <stuart.brady@arm.com>

test_common/harness/deviceInfo.cpp

@@ -1,6 +1,6 @@
 //
 // Copyright (c) 2017-2019 The Khronos Group Inc.
-// 
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -31,7 +31,7 @@ std::string get_device_info_string(cl_device_id device,
     int err;
 
     if ((err = clGetDeviceInfo(device, param_name, 0, NULL, &size))
-        != CL_SUCCESS
+            != CL_SUCCESS
         || size == 0)
     {
         throw std::runtime_error("clGetDeviceInfo failed\n");