add fifo read and write commands
add comments, add a function to set a single byte property
add bits for global config property and fast response register options

wireless/ieee802154: MRF24J40: Finishes receive functionality, supports promicuous mode, and rxonidle attributes

wireless/ieee802154: Reworks data_ind allocation to include IOB allocation/deallocation. Hides private data.

Also reformat some long lines.

wireless/ieee802154: Removes radio IOCTL.  Starts bringing radio and MAC closer with well-defined interface.

also fix upper half ioctl

wireless/ieee802154: Changes transmit data path to use IOBs and exposes function for getting size of MAC header

IOCTLS.  Separate wireless character driver IOCTL commands from wireless network driver IOCTL commands.  Move from wireless.h to ioctl.h.

add comments

restore the upper half behaviour waiting on a semaphore after write, adapt cc1101 to keep it working