Juggle things around to move the pinmux earlier.  Comment out MUXCFG settings that have not been configured by picoxcell-code.
Have a stab at sorting out GPIO and hooking in the SPI GPIO for RF.
Use proper GPIO names
Disable extra busses for now.
Re-enable the first SPI-GPIO bus to see what happens.
Give the SPI-GPIO driver a new ID.
Enable the SPI flash.
Do MUX config for the second SPI-GPIO - I'm not too sure about this...
Don't do MUX config for the decode pins - I think that's interfering with the SPI flash.
Register additional pinmux and see what explodes (now).
Register correctly.
Hook up SPI slaves and see if we can get i2c up.
Enable the second i2c-gpio controller
Register i2c board information - we still need drivers.
Re-enable pin mux