soc/amd: Rename smm_region_info() to smm_region()

Change-Id: I361fb0e02fd0bd92bb1e13fe84c898a1ac85aa40
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34703
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/include/cpu/x86/smm.h

@@ -588,7 +588,6 @@ void restore_default_smm_area(void *smm_save_area);
  * protections. e.g. TSEG.
  */
 void smm_region(void **start, size_t *size);
-void smm_region_info(void **start, size_t *size);
 
 enum {
 	/* SMM handler area. */