Although the depth can be correctly inferred from bits_per_pixel (if
bits_per_pixel == 1), for the sake of consistency, drivers should still set
the color fields correctly.  True even if the first patch is not applied.

(I've combined everything in a single diff since there is only 1 logical
change)
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>