OvmfPkg: SmbiosPlatformDxe: move IsEntryPointStructureValid() to Xen.c

This function is only called from Xen.c, so it should be defined in Xen.c
and have internal linkage (ie. STATIC).

Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Gabriel Somlo <somlo@cmu.edu>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18039 6f19259b-4bc3-4df7-8a09-765794883524

OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.h

@@ -51,19 +51,4 @@ GetQemuSmbiosTables (
   VOID
   );
 
-
-/**
-  Validates the SMBIOS entry point structure
-
-  @param  EntryPointStructure  SMBIOS entry point structure
-
-  @retval TRUE   The entry point structure is valid
-  @retval FALSE  The entry point structure is not valid
-
-**/
-BOOLEAN
-IsEntryPointStructureValid (
-  IN SMBIOS_TABLE_ENTRY_POINT  *EntryPointStructure
-  );
-
 #endif