intel/smm: Provide common smm_relocation_params

Pull in all copies of smm_relocation_params structs defined
for intel platforms.

Pull in all the inlined MSR accessors to the header file.

Change-Id: I39c6cffee95433aea1a3c783b869eedfff094413
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34840
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/skylake/cpu.c

@@ -41,7 +41,6 @@
 #include <soc/pci_devs.h>
 #include <soc/pm.h>
 #include <soc/ramstage.h>
-#include <soc/smm.h>
 #include <soc/systemagent.h>
 #include <timer.h>