arm64: dts: qcom: sm8350: Add GENI I2C/SPI DMA channels

The GENI I2C and SPI controllers may use the GPI DMA engine, define the
rx and tx channels for these controllers to enable this.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20220412215137.2385831-2-bjorn.andersson@linaro.org