x86: Add Intel Braswell SoC support

This adds initial Intel Braswell SoC support. It uses Intel FSP
to initialize the chipset.

Similar to its predecessor BayTrail, there are some work to do to
enable the legacy UART integrated in the Braswell SoC.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
8 files changed