spi: ep93xx: update kerneldoc comments for ep93xx_spi

Two fields got removed but are still documented:

drivers/spi/spi-ep93xx.c:98: warning: Excess struct member 'dma_rx_data' description in 'ep93xx_spi'
drivers/spi/spi-ep93xx.c:98: warning: Excess struct member 'dma_tx_data' description in 'ep93xx_spi'

Fixes: 3cfe73256905 ("spi: ep93xx: add DT support for Cirrus EP93xx")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

-2
-2
drivers/spi/spi-ep93xx.c
··· 76 76 * frame decreases this level and sending one frame increases it. 77 77 * @dma_rx: RX DMA channel 78 78 * @dma_tx: TX DMA channel 79 - * @dma_rx_data: RX parameters passed to the DMA engine 80 - * @dma_tx_data: TX parameters passed to the DMA engine 81 79 * @rx_sgt: sg table for RX transfers 82 80 * @tx_sgt: sg table for TX transfers 83 81 * @zeropage: dummy page used as RX buffer when only TX buffer is passed in by