Update the nrf24l01_ioctl function to fully comply with the common wireless
character driver interface defined in nuttx/wireless/ioctl.h, and complete
previously unimplemented device-specific commands.
* Add support for WLIOC_SETRADIOFREQ and WLIOC_GETRADIOFREQ with
quantitative conversion between Hz (API) and MHz (Hardware).
* Add support for WLIOC_SETTXPOWER, WLIOC_GETTXPOWER, WLIOC_SETFINEPOWER,
and WLIOC_GETFINEPOWER.
* Add WLIOC_SETMODU and WLIOC_GETMODU, strictly enforcing WLIOC_GFSK
modulation as required by the nRF24L01 physical layer.
* Map WLIOC_SETADDR and WLIOC_GETADDR to the existing TX address routines.
* Resolve -ENOSYS in NRF24L01IOC_GETRETRCFG by reading the
NRF24L01_SETUP_RETR register and decoding ARD/ARC shift bits.
* Resolve -ENOSYS in NRF24L01IOC_GETDATARATE by parsing RF_DR_LOW and
RF_DR_HIGH bits from the NRF24L01_RF_SETUP register.
Signed-off-by: Chip L. <chplee@gmail.com>
47c7169825