Fix typo.

llvm-svn: 210947
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.h b/llvm/lib/Target/PowerPC/PPCSubtarget.h
index 3436095..2d8399e 100644
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.h
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.h
@@ -140,7 +140,7 @@
   ///
   unsigned getDarwinDirective() const { return DarwinDirective; }
 
-  /// getInstrItins - Return the instruction itineraies based on subtarget
+  /// getInstrItins - Return the instruction itineraries based on subtarget
   /// selection.
   const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }