Move definitions of HIGH_MEMORY_SAVE

This is more of ACPI S3 resume and x86 definition than CBMEM.

Change-Id: Iffbfb2e30ab5ea0b736e5626f51c86c7452f3129
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/15190
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/arch/x86/include/arch/acpi.h

@@ -24,6 +24,14 @@
 #ifndef __ASM_ACPI_H
 #define __ASM_ACPI_H
 
+#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME) && \
+	! IS_ENABLED(CONFIG_RELOCATABLE_RAMSTAGE)
+#define HIGH_MEMORY_SAVE	(CONFIG_RAMTOP - CONFIG_RAMBASE)
+#else
+#define HIGH_MEMORY_SAVE	0
+#endif
+
+#ifndef __ASSEMBLER__
 #include <stdint.h>
 #include <rules.h>
 #include <commonlib/helpers.h>
@@ -643,4 +651,6 @@ static inline uintptr_t acpi_align_current(uintptr_t current)
 	return ALIGN(current, 16);
 }
 
+#endif  /* __ASSEMBLER__ */
+
 #endif  /* __ASM_ACPI_H */