CorebootModulePkg: Fix memmap issue

Some reserved memory (e.g. CSE reserved memory) might be in the
middle of usable physical memory. The current memory map caculation
could not handle this case. This patch fixed this issue.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: gdong1 <guo.dong@intel.com>
Reviewed-by: Maurice Ma <maurice.ma@intel.com>

CorebootModulePkg/CbSupportPei/CbSupportPei.h

@@ -38,5 +38,11 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Guid/AcpiBoardInfoGuid.h>
 
 #include <Ppi/MasterBootMode.h>
+#include "Coreboot.h"
+
+typedef struct {
+  UINT32  UsableLowMemTop;
+  UINT32  SystemLowMemTop;
+} CB_MEM_INFO;
 
 #endif