Merge pull request #3428 from gebart/pr/doxygen-groups

boards/avsextrem/board_init.c

boards/msba2-common/board_common_init.c

boards/pttu/board_init.c

cpu/arm7_common/arm_cpu.c

cpu/arm7_common/bootloader.c

cpu/arm7_common/include/VIC.h

cpu/arm7_common/include/arm7_common.h

cpu/arm7_common/panic.c

cpu/arm7_common/syscalls.c

cpu/lpc2387/doc/lpc2387.doc

cpu/lpc2387/include/lpc2387.h

cpu/lpc2387/periph/pwm.c

cpu/msp430-common/include/assert.h

cpu/msp430-common/include/cpu.h

cpu/msp430-common/include/hwtimer_cpu.h

cpu/msp430-common/panic.c