streamlined driver include pathes

boards/avsextrem/drivers/Makefile

boards/avsextrem/drivers/avsextrem-cc1100.c

boards/chronos/drivers/Makefile

boards/chronos/drivers/cc430-cc110x.c

boards/msb-430h/Makefile

boards/msb-430h/driver_cc110x.c

boards/msba2-common/drivers/Makefile

boards/msba2-common/drivers/msba2-cc110x.c

boards/wsn430-v1_3b/Makefile

boards/wsn430-v1_3b/driver_cc110x.c

cpu/cc430/Makefile

cpu/cc430/cc110x_cc430.c

drivers/cc110x_ng/cc110x-defaultSettings.c

drivers/cc110x_ng/cc110x-internal.h

drivers/cc110x_ng/cc110x-rx.c

drivers/cc110x_ng/cc110x-tx.c

drivers/cc110x_ng/cc110x.c

drivers/cc110x_ng/spi/Makefile

drivers/cc110x_ng/spi/cc110x_spi.c

drivers/include/at86rf231.h