Add BMI, BMI2, and LZCNT feature flags to enable adding intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147262 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Headers/immintrin.h b/lib/Headers/immintrin.h
index 80b2448..53838ec 100644
--- a/lib/Headers/immintrin.h
+++ b/lib/Headers/immintrin.h
@@ -48,7 +48,7 @@
 #include <smmintrin.h>
 #endif
 
-#if defined (__AES__) || defined (__PCLMUL__)
+#if defined (__AES__)
 #include <wmmintrin.h>
 #endif