intel/fsp1_1: Drop remnants of pei_data

`pei_data` was a struct with blob parameters from pre-FSP times.
Somehow, it sneaked into upstream FSP1.1 support (probably because
early board ports were written for a different blob). When added
upstream, its usage was already perverted. It was declared at SoC
level but mostly used to pass mainboard data from mainboard code
to itself and FSP data from FSP code to itself. Now that no board/
SoC code uses it anymore, we can finally drop it.

Change-Id: Ib0bc402703188539cf2254bdc395cca9dd32d863
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32596
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/mainboard/google/eve/spd/spd.c

@@ -19,7 +19,6 @@
 #include <console/console.h>
 #include <gpio.h>
 #include <soc/gpio.h>
-#include <soc/pei_data.h>
 #include <soc/romstage.h>
 #include <string.h>