RIOT-OS/RIOT — pull request #1930 by hexluthor (2014-11-03 19:27:36+00:00)
Title: cpu/cc2538: Enable the CC2538's more compact alternate interrupt mapping.

RIOT has been using the alternate interrupt mapping in its vector table since 24ac5a7 but the MCU is still expecting the normal mapping, which causes hard faults whenever a higher-numbered interrupt is generated (e.g. sleep timer or radio). This PR tells the MCU to use the new alternate mapping.