[lldb] Skip TestVSCode_coreFile if no x86 target support

Author: kastiglione

lldb/test/API/tools/lldb-vscode/coreFile/TestVSCode_coreFile.py

@@ -44,6 +44,7 @@ def test_core_file(self):
 
     @skipIfWindows
     @skipIfRemote
+    @skipIfLLVMTargetMissing("X86")
     def test_core_file_source_mapping(self):
         ''' Test that sourceMap property is correctly applied when loading a core '''
         current_dir = os.path.dirname(os.path.realpath(__file__))