added board airfy beacon
netdev: clarify documentation of netdev_driver_t::get_option()
Merge pull request #1928 from authmillenon/netdev-fix-doc

netdev: clarify documentation of netdev_driver_t::get_option()
cpu/cc2538: Enable the CC2538's more compact alternate interrupt mapping.
Merge pull request #1930 from locicontrols/cc2538-altmap

cpu/cc2538: Enable the CC2538's more compact alternate interrupt mapping.
Merge pull request #1896 from mehlis/add_board_airfy_beacon

added board airfy beacon
cpu/stm32f1: fixes for the cpuid driver
added new board f4vi1
Merge pull request #1931 from thomaseichinger/stm32f1-cpuid

cpu/stm32f1: fixes for the cpuid driver
Merge pull request #1933 from StefanPfeiffer/add_board_f4vi1

board: added support for f4vi1