[coreboot] [patch] fix intel 82810 onboard VGA and SDRAM functions

[Elia Yehuda]

This patch enables the onboard VGA found on 82810 boards and fixes the
memory procedures to support different kinds of DIMMs. also, support for
82810e board had been added. The only drawback from this patch is the
HAVE_HIGH_TABLES being disabled since it disables (for unknown reason)
the onboard VGA.

Signed-off-by: Elia Yehuda