Fix bad header definition that prevented the driver for working at all. START_IMMEDIATE was actually asking to wait for expiration of the wake up timer, which requires enabling the 32 kHz low power oscillator, which just does not exist on the RFM26W, so the wake up timer was NEVER expiring

Also redefine GPIOs even after WDS canned config.
Also enable more ints.

lots of small misc changes
conditional storage of int status
custom irq setting
cut long lines and add {}
add bit definitions for int definition
upper half: manage read timeout

properly set the data rate
preliminary tx power setting, uncalibrated
TX_NCO_MODE definitions
support for CW modulation (module behave as a signal generator)

implement get_chip_status and use it to detect command errors

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

also fix upper half ioctl