Before:
  runtime ale_linters/vhdl/xvhdl.vim

After:
  call ale#linter#Reset()

Execute(The xvhdl handler should parse lines correctly):
  AssertEqual
  \ [
  \   {
  \     'lnum': 17,
  \     'type': 'E',
  \     'text': '[VRFC 10-91] aresetn is not declared '
  \   },
  \   {
  \     'lnum': 128,
  \     'type': 'E',
  \     'text': '[VRFC 10-91] m_axis_tx_tdata is not declared '
  \   },
  \ ],
  \ ale_linters#vhdl#xvhdl#Handle(bufnr(''), [
  \   'ERROR: [VRFC 10-91] aresetn is not declared [/path/to/file.vhd:17]',
  \   'ERROR: [VRFC 10-91] m_axis_tx_tdata is not declared [/home/user/tx_data.vhd:128]',
  \ ])