LLVM enablement for some older PowerPC CPUs

llvm-svn: 174230
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.h b/llvm/lib/Target/PowerPC/PPCSubtarget.h
index 28f8587..15885bd 100644
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.h
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.h
@@ -43,7 +43,12 @@
     DIR_A2,
     DIR_E500mc,
     DIR_E5500,
+    DIR_PWR3,
+    DIR_PWR4,
+    DIR_PWR5,
+    DIR_PWR5X,
     DIR_PWR6,
+    DIR_PWR6X,
     DIR_PWR7,
     DIR_64
   };