IEI PM-LX-800-R11: Added preliminary mainboard support

Details for this board are available at
http://www.ieiworld.com/product_groups/industrial/content.aspx?gid=00001000010000000001&cid=09050665574743104681&id=08142307826854456110

Most of the functionality provided by the original BIOS is
implemented.

Change-Id: Id9eb10a2f9e49377ea587bddadbba7d76223a715
Signed-off-by: Ricardo Martins <rasmartins@gmail.com>
Reviewed-on: http://review.coreboot.org/1168
Tested-by: build bot (Jenkins)
Reviewed-by: Sven Schnelle <svens@stackframe.org>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
7 files changed