Fix file first line comment. Fix nits.

Author: Prabhuk

clang/lib/Driver/ToolChains/UEFI.cpp

@@ -1,4 +1,4 @@
-//===--- UEFI.h - UEFI ToolChain Implementations ----------*- C++ -*-===//
+//===--- UEFI.cpp - UEFI ToolChain Implementations -----------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang/lib/Driver/ToolChains/UEFI.h

@@ -12,8 +12,7 @@
 #include "clang/Driver/Tool.h"
 #include "clang/Driver/ToolChain.h"
 
-namespace clang {
-namespace driver {
+namespace clang::driver {
 namespace tools {
 namespace uefi {
 class LLVM_LIBRARY_VISIBILITY Linker : public Tool {
@@ -55,7 +54,6 @@ class LLVM_LIBRARY_VISIBILITY UEFI : public ToolChain {
 };
 
 } // namespace toolchains
-} // namespace driver
-} // namespace clang
+} // namespace clang::driver
 
 #endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_UEFI_H

clang/test/Driver/uefi-data-layout.c

@@ -1,4 +1,3 @@
 // RUN: %clang -target x86_64-unknown-uefi -S -emit-llvm -o - %s | \
 // RUN:     FileCheck --check-prefix=X86_64_UEFI %s
 // X86_64_UEFI: target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
-