drivers/intel/fsp2_0: fix hand-off-block types and size

The gcc compiler treats sizeof(void) == 1. Therefore requesting
a 1 byte reservation in cbmem and writing a pointer into the
buffer returned is wrong. Fix the size of the request to be
32-bits because FSP 2.0 is in 32-bit space by definition. Also,
since the access to the field happens across stage boundaries
it's important to ensure fixed widths are used in case a later
stage has a different pointer bit width.

BUG=chrome-os-partner:52679

Change-Id: Ib4efc7d5369d44a995318aac6c4a7cfdc73e4a8c
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15737
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
1 file changed