x86: pkeys: add test for PKEYS

Signed-off-by: Huaitong Han <huaitong.han@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/x86/unittests.cfg b/x86/unittests.cfg
index 8f8bf35..ffffc15 100644
--- a/x86/unittests.cfg
+++ b/x86/unittests.cfg
@@ -76,6 +76,11 @@
 file = smap.flat
 extra_params = -cpu host
 
+[pku]
+file = pku.flat
+arch = x86_64
+extra_params = -cpu host
+
 #[asyncpf]
 #file = asyncpf.flat