Add board request: Sodaq SARA

[PappZso]

Hello! I would like to ask you to add the Sodaq SARA board, link:

https://support.sodaq.com/sodaq-one/sodaq-sara-r410m/

Your work is appreciated a lot, thank you very much!

[ivankravets]

Duplicate of https://github.com/platformio/platform-atmelsam/issues/34

[ivankravets]

Please re-test with upstream version. Does it work for you?

• http://docs.platformio.org/en/latest/platforms/atmelsam.html#upstream