nb/intel/ironlake/memmap.c: Clean up includes

Drop unused includes and add missing <types.h>.

Change-Id: Ifefe81d4727d67ea702c5e24527f80a0614aa396
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45918
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/northbridge/intel/ironlake/memmap.c

@@ -7,8 +7,8 @@
 #include <cbmem.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/smm.h>
-#include <program_loading.h>
-#include <cpu/intel/smm_reloc.h>
+#include <types.h>
+
 #include "ironlake.h"
 
 static uintptr_t smm_region_start(void)