x86: ivybridge: Add FSP support

IvyBridge FSP package is built with a base address at 0xfff80000,
and does not use UPD data region. This adds basic FSP support.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested on link (ivybridge non-FSP)
Tested-by: Simon Glass <sjg@chromium.org>
6 files changed