Only legacy PXA DMA implementation was using these rx_dma and tx_dma DMA
addresses so they are not needed after commit 6356437e
("spi: spi-pxa2xx: remove legacy PXA DMA bits").
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>