powerpc/powernv: remove pnv_npu_dma_set_mask

These devices are not PCIe devices and do not have associated dma map
ops, so this is just dead code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christoph Hellwig 2019-02-13 08:01:13 +01:00 • committed by Michael Ellerman
commit 6248ac9441