RIOT-OS/RIOT — pull request #1524 by Kijewski (2014-08-01 00:41:11+00:00)
Title: make: provide BOARD, MCU and CPU name as a string

This PR adds the defined `RIOT_BOARD`, `RIOT_CPU` and `RIOT_MCU`.
They each are defined as `BOARD_${BOARD}`, `CPU_${CPU}`, and
`MCU_${CPU}`, resp.

`BOARD_${BOARD}` is defined as the string `"${BOARD}"`, but not in upper
case. Same for the other two.