Use shared OpenSUT CN definitions

[peterohanley]

Describe your changes

The MKM specs now use the same CN definitions and workarounds as the MPS and trusted boot components. This is a patch onto #142

[podhrmic]

@septract have a look at the commit from @peterohanley (specifically 055581e)

It looks like your branch has changed, so the changes might no longer be relevant, but maybe it is still helpful such that we avoid duplication of specs.

[septract]

Thanks @podhrmic @peterohanley. I've now integrated these changes into #142 (in client.c rather than my test file client-reduced.c)

[peterohanley]

Closing as it has been merged.