Merge pull request #3780 from haukepetersen/add_test_periph_timer

boards/chronos/include/periph_conf.h

boards/frdm-k64f/include/periph_conf.h

boards/msb-430/include/periph_conf.h

boards/msb-430h/include/periph_conf.h

boards/mulle/include/periph_conf.h

boards/pba-d-01-kw2x/include/periph_conf.h

boards/telosb/include/periph_conf.h

boards/wsn430-common/include/periph_conf.h

boards/z1/include/periph_conf.h

cpu/cc430/periph/timer.c

cpu/kinetis_common/doc.txt

cpu/kinetis_common/timer.c

cpu/msp430fxyz/periph/timer.c

tests/periph_timer/Makefile

tests/periph_timer/main.c