Replaced magic undocumented numbers in the code by human readable preprocessor
macros.

Function cc110x_state_to_text is defined and (with ENABLE_DEBUG) referenced,
but implemented. This commit adds the missing implementation.

pkg: ndn-riot: initial import of ndn-riot as a package

boards: add Ublox C030-U201

pkg/tinycbor: Initial import

net/gnrc/rpl: fix doxygen grouping

drivers/periph: add basic API to read/write data to EEPROM

tests/xtimer_now64: Start time measure after print

boards: use marketing name for stm32f769i-disco

cpu/cortex_common: fix indention in vector table

cpu/stm32f4: fix periph_cpu.h for f412zg and f446ze

drivers/periph: fix doxygen groups in implementation

tests/driver_at: fix wrong nucleo board name

boards/nucleo32*: rename boards to use their ST marketing name

drivers: initial commit of generic AT parser module