spi: rockchip_sfc: Use linux rockchip,sfc-no-dma prop

Use the same prop as linux to control the use of fifo or dma mode. Also
add a u-boot,spl-sfc-no-dma prop to control the same in SPL.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>