linux-next: Signed-off-by missing for commits in the spi tree

Hi all,

Commits

  878d4d57a6e5 ("spi: spi-sun6i: sun6i_spi_transfer_one(): enable RF_RDY interrupt only if needed")
  1e9ca016b623 ("spi: spi-sun6i: sun6i_spi_transfer_one(): collate write to Interrupt Control Register")
  15254b028dd6 ("spi: spi-sun6i: sun6i_spi_fill_fifo(): remove not needed length argument")
  60b1f09675f2 ("spi: spi-sun6i: sun6i_spi_drain_fifo(): remove not needed length argument")
  9bfc242a9379 ("spi: spi-sun6i: sun6i_spi_drain_fifo(): introduce sun6i_spi_get_rx_fifo_count() and make use of it")
  e0430d904098 ("spi: spi-sun6i: sun6i_spi_get_tx_fifo_count: Convert manual shift+mask to FIELD_GET()")
  05bf34283c8e ("spi: spi-sun6i: sun6i_spi_transfer_one(): remove not needed masking of transfer length")
  642d75131c8c ("spi: spi-sun6i: sun6i_spi_transfer_one(): remove useless goto")
  09a7139e9e17 ("spi: spi-sun6i: sun6i_spi_transfer_one(): report effectivly used speed_hz of transfer")

are missing a Signed-off-by from their committer.

-- 
Cheers,
Stephen Rothwell