Without this patch after compiling barebox
for a PowerPC board we have 'git status'
output looking like this:

  # Untracked files:
  #   (use "git add <file>..." to include in what will be committed)
  #
  #       arch/ppc/boards/pcm030/barebox.lds

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>