x86: Move acpi_s3.h to a common location

At present this hedaer is only available on x86. To allow sandbox to use
it for testing, move it to a common location.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/sysreset/sysreset_x86.c b/drivers/sysreset/sysreset_x86.c
index 072f794..8e2d1ea 100644
--- a/drivers/sysreset/sysreset_x86.c
+++ b/drivers/sysreset/sysreset_x86.c
@@ -6,11 +6,11 @@
  */
 
 #include <common.h>
+#include <acpi_s3.h>
 #include <dm.h>
 #include <efi_loader.h>
 #include <pch.h>
 #include <sysreset.h>
-#include <asm/acpi_s3.h>
 #include <asm/io.h>
 #include <asm/processor.h>