x86: Simplify the fsp hob access functions

Remove the troublesome union hob_pointers so that some annoying casts
are no longer needed in those hob access routines. This also improves
the readability.

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