Without fix:
Setting alarm to 12627-11-30 15:00:05
Alarm is set to 12722-01-25 07:13:03
With fix:
Setting alarm to 2011-12-13 14:15:17
Alarm is set to 2011-12-13 14:15:17
Rename 'cpu/efm32/families/efr32mg1p' module to 'cpu_efr32mg1p' to don't
conflict with 'cpu'.
Also required to set the path to vectors.o as its not provided by cpu.