The ath9k driver doesn't need anything provided by pci-aspm.h, so remove
the unnecessary include of it.
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NSinan Kaya <okaya@kernel.org>
Acked-by: NKalle Valo <kvalo@codeaurora.org>