cpu/x86/mp_init.c: Drop 'real' vs 'used' save state

Now that the save state size is handled properly inside the smm_loader
there is no reason to make that distinction in the mp_init code anymore.

Change-Id: Ia0002a33b6d0f792d8d78cf625fd7e830e3e50fc
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63479
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@tutanota.com>

src/include/cpu/x86/smm.h

@@ -127,7 +127,7 @@ static inline bool smm_points_to_smram(const void *ptr, const size_t len)
 /* The smm_loader_params structure provides direction to the SMM loader:
  * - num_cpus - number of concurrent cpus in handler needing stack
  *                           optional for setting up relocation handler.
- * - per_cpu_save_state_size - the SMM save state size per cpu
+ * - cpu_save_state_size - the SMM save state size per cpu
  * - num_concurrent_save_states - number of concurrent cpus needing save state
  *                                space
  * - handler - optional handler to call. Only used during SMM relocation setup.
@@ -139,8 +139,7 @@ static inline bool smm_points_to_smram(const void *ptr, const size_t len)
 struct smm_loader_params {
 	size_t num_cpus;
 
-	size_t real_cpu_save_state_size;
-	size_t per_cpu_save_state_size;
+	size_t cpu_save_state_size;
 	size_t num_concurrent_save_states;
 
 	smm_handler_t handler;