[TableGen] Correct comments for end of namespace. NFC

Summary:
Update end-of-namespace comments generated by
tablegen emitters to fulfill the rules setup by
clang-tidy's llvm-namespace-comment checker.

Fixed a few end-of-namespace comments in the
tablegen source code as well.

Reviewers: craig.topper

Reviewed By: craig.topper

Subscribers: craig.topper, stoklund, dschuff, sbc100, jgravelle-google, aheejin, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66396

llvm-svn: 369865
diff --git a/llvm/utils/TableGen/CodeGenMapTable.cpp b/llvm/utils/TableGen/CodeGenMapTable.cpp
index b1774b0..7a5175a 100644
--- a/llvm/utils/TableGen/CodeGenMapTable.cpp
+++ b/llvm/utils/TableGen/CodeGenMapTable.cpp
@@ -168,7 +168,7 @@
     return ValueCols;
   }
 };
-} // End anonymous namespace.
+} // end anonymous namespace
 
 
 //===----------------------------------------------------------------------===//
@@ -226,7 +226,7 @@
   void emitMapFuncBody(raw_ostream &OS, unsigned TableSize);
 
 };
-} // End anonymous namespace.
+} // end anonymous namespace
 
 
 //===----------------------------------------------------------------------===//
@@ -604,8 +604,8 @@
     // Emit map tables and the functions to query them.
     IMap.emitTablesWithFunc(OS);
   }
-  OS << "} // End " << NameSpace << " namespace\n";
-  OS << "} // End llvm namespace\n";
+  OS << "} // end namespace " << NameSpace << "\n";
+  OS << "} // end namespace llvm\n";
   OS << "#endif // GET_INSTRMAP_INFO\n\n";
 }