dmaengine: sun6i: Add support for the D1 variant

So far it appears to match the configuration of the A100 variant.

Since D1 is a RISC-V chip, it does not meet any of the existing
dependencies for this driver, so relax the dependency somewhat.
Acked-by: NMaxime Ripard <maxime@cerno.tech>
Signed-off-by: NSamuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20220424172759.33383-5-samuel@sholland.orgSigned-off-by: NVinod Koul <vkoul@kernel.org>

drivers/dma/Kconfig

@@ -163,7 +163,7 @@ config DMA_SUN4I
 
 config DMA_SUN6I
 	tristate "Allwinner A31 SoCs DMA support"
-	depends on MACH_SUN6I || MACH_SUN8I || (ARM64 && ARCH_SUNXI) || COMPILE_TEST
+	depends on ARCH_SUNXI || COMPILE_TEST
 	depends on RESET_CONTROLLER
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS

drivers/dma/sun6i-dma.c

@@ -1271,6 +1271,7 @@ static const struct of_device_id sun6i_dma_match[] = {
 	{ .compatible = "allwinner,sun8i-a83t-dma", .data = &sun8i_a83t_dma_cfg },
 	{ .compatible = "allwinner,sun8i-h3-dma", .data = &sun8i_h3_dma_cfg },
 	{ .compatible = "allwinner,sun8i-v3s-dma", .data = &sun8i_v3s_dma_cfg },
+	{ .compatible = "allwinner,sun20i-d1-dma", .data = &sun50i_a100_dma_cfg },
 	{ .compatible = "allwinner,sun50i-a64-dma", .data = &sun50i_a64_dma_cfg },
 	{ .compatible = "allwinner,sun50i-a100-dma", .data = &sun50i_a100_dma_cfg },
 	{ .compatible = "allwinner,sun50i-h6-dma", .data = &sun50i_h6_dma_cfg },