spi: pxa2xx: Remove unused DMA buffer mappings

Only legacy PXA DMA implementation was using these rx_dma and tx_dma DMA
addresses so they are not needed after commit 6356437e65c2
("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>
2 files changed