xorg fbdev support for < 8 bits per pixel

[Mikhail Gusarov]

Twas brillig at 16:31:58 12.05.2011 UTC+03 when jonathan.morton at movial.com did gyre and gimble:

 JM> Would it be sufficient to use an 8bpp greyscale framebuffer and simply
 JM> ignore the low-order bits on scanout?

That's exactly what OpenInkpot does for 2-3-4-bit-depth grayscale eInk
screens.

-- 
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