am45x-evm: Add am45x-evm machine configuration
am45x-evm: Add am45x-evm machine configuration

* Added a new machine configuration for the am45x-evm device.
* This machine currently mimics the omap4430-panda configuration
  during the prototyping phase but is expected to change as the
  hardware and software evolves.
* The am45x-evm machine type is used to allow differentiating
  software components to be build and packaged (i.e. task lists)
  as well as to account for differences with the omap4430-panda
  device in the future.

Signed-off-by: Chase Maupin <5a5662f468a76e0fc4391e65fb9f536df44d7380@ti.com>
Acked-by: Denys Dmytriyenko <d29de71aea38aad3a87d486929cb0aad173ae612@ti.com>
Signed-off-by: Koen Kooi <42e3d96910f922bdd7dd1805fe3f8aff634f391d@openembedded.org>

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