intelfb driver -- use the regular modedb table instead of the VESA

modedb table.  Ideally, the 9xx stride patch should be applied first, since
there are modes in the VESA table that won't work without that patch.

Signed-off-by: Dennis Munsie <dmunsie@cecropia.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>