Resolved YAMLLoadWarning adding Loader=FullLoader

[Elevate08]

When running amdgpu-fan from command line there is a YAMLLoadWarning when using python3.7. This was resolved by adding Loader=FullLoader on line 44

[tawera]

I suspect an import statement is missing:

Traceback (most recent call last): File "/usr/local/bin/amdgpu-fan", line 11, in <module> load_entry_point('amdgpu-fan===PROJECTVERSION', 'console_scripts', 'amdgpu-fan')() File "/usr/local/lib/python3.7/site-packages/amdgpu_fan-PROJECTVERSION-py3.7.egg/amdgpu_fan/controller.py", line 67, in main File "/usr/local/lib/python3.7/site-packages/amdgpu_fan-PROJECTVERSION-py3.7.egg/amdgpu_fan/controller.py", line 44, in load_config NameError: name 'FullLoader' is not defined
Either add import or use full_load or safe_load instead of load:

https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation#how-to-disable-the-warning

[tawera]

I see now that #13 is a duplicate of this PR which solves the same issue the correct way so please merge that one and close this one.