set the console arg to 1. Noted by mhitch.
- In px_init(), don't compute pxi_fontscale if we're not the console,
since we don't have a font in the first place. This is a relic from
when the driver was converted to use 'struct wsdisplay_font'.
Should fix crashes if a px board is installed and isn't the console.
includes the STIC poll registers.
- Don't bother enabling ISR driven packet queueing on device open. It doesn't
work for the PXG due to severe dainbramage on the part of DEC and doesn't
work properly on the 3min due to the spl stuff being a mess.
- 'struct fbsoftc' created, which points to a 'struct fbinfo'
- 'struct fbinfo' for each device is allocated with fballoc()
This means:
- Console device doesn't get different 'struct fbinfo' at attach
- Console device doesn't get initialized twice
- Color rcons now works
- The current Xserver MUST BE REBUILT.
totally broken for the PXG and will remain so until more documentation is
available. This destroys the queueing, hardware clipping, and VDAC update
mechanisms on the PXG.
