drivers: add cc110x driver

Makefile.dep

drivers/cc110x/Makefile

drivers/cc110x/cc110x-defaultsettings.c

drivers/cc110x/cc110x-netdev2.c

drivers/cc110x/cc110x-rxtx.c

drivers/cc110x/cc110x-spi.c

drivers/cc110x/cc110x.c

drivers/cc110x/gnrc_cc110x/Makefile

drivers/cc110x/gnrc_cc110x/gnrc_netdev2_cc110x.c

drivers/include/cc110x.h

drivers/include/cc110x/cc110x-defaultsettings.h

drivers/include/cc110x/cc110x-defines.h

drivers/include/cc110x/cc110x-interface.h

drivers/include/cc110x/cc110x-internal.h

drivers/include/cc110x/cc110x-netdev2.h

drivers/include/cc110x/cc110x-spi.h

drivers/include/cc110x/gnrc_netdev2_cc110x.h

sys/auto_init/auto_init.c

sys/auto_init/netif/auto_init_cc110x.c