Enable check for DEP / NX page protection

src/trusted/platform_qualify/platform_qual_test.c

Index: src/trusted/platform_qualify/platform_qual_test.c
===================================================================
--- src/trusted/platform_qualify/platform_qual_test.c	(revision 3470)
+++ src/trusted/platform_qualify/platform_qual_test.c	(working copy)
@@ -17,6 +17,7 @@
 #include <stdio.h>
 #include "native_client/src/trusted/validator_x86/nacl_cpuid.h"
 #include "native_client/src/trusted/platform_qualify/nacl_cpuwhitelist.h"
+#include "native_client/src/trusted/platform_qualify/nacl_dep_qualify.h"
 #include "native_client/src/trusted/platform_qualify/nacl_os_qualify.h"
 #include "native_client/src/trusted/platform_qualify/vcpuid.h"
 
@@ -44,6 +45,9 @@
   if (NaClOsRestoresLdt() != 1) return -1;
   printf("OS restores LDT\n");
 
+  if (NaClCheckDEP() != 1) return -1;
+  printf("DEP is either working or not required\n");
+
   printf("platform_qual_test: PASS\n");
   return 0;
 }