public header platform.hpp missing UHD_API exports

[guruofquality]

https://github.com/EttusResearch/uhd/blob/master/host/include/uhd/utils/platform.hpp

[bhilburn]

There isn't any reason to export those symbols, actually. The real bug here is that that header doesn't need to be public. We will move it to an internal directory in the future.

Thanks for pointing this out!