NUMAKER_PFM_NUC472 does not export to IAR

[c1728p9]

The target NUMAKER_PFM_NUC472 does not have an IAR exporter entry. For exporting to work this needs to be added.

[cyliangtw]

NUC472 could pass the test patterns based on IAR tool chain.
Not support IAR export yet, is it mandatory ?

[0xc0170]

Not support IAR export yet, is it mandatory ?

It would be nice to have.

[theotherjimmy]

@c1728p9 Brian's PR was merged. can we close this?

[c1728p9]

Yep