[lit] Use 'target=' in a few more places

Missed these on the first pass.

Part of the project to eliminate special handling for triples in lit
expressions.

Author: pogo59

clang/test/CodeGen/volatile-1.c

@@ -1,4 +1,4 @@
-// XFAIL: aarch64-pc-windows-msvc
+// XFAIL: target=aarch64-pc-windows-msvc
 // RUN: %clang_cc1 -Wno-return-type -Wno-unused-value -emit-llvm %s -w -o - | FileCheck %s
 
 // CHECK: @i = {{(dso_local )?}}global [[INT:i[0-9]+]] 0

clang/test/Modules/hidden-duplicates.m

@@ -1,4 +1,4 @@
-// XFAIL: aix, -zos
+// XFAIL: target={{.*}}-aix{{.*}}, target={{.*}}-zos{{.*}}
 // RUN: rm -rf %t
 // RUN: split-file %s %t
 // RUN: %clang_cc1 -emit-llvm -o %t/test.bc -I %t/include %t/test.m -verify \

clang/test/Modules/override.m

@@ -1,4 +1,4 @@
-// UNSUPPORTED: -aix
+// UNSUPPORTED: target={{.*}}-aix{{.*}}
 // RUN: rm -rf %t
 // RUN: split-file %s %t
 // RUN: %clang_cc1 -fsyntax-only -I%t/include %t/test.m \