arm64: defconfig: enable Allwinner DMA drivers

Allwinner sun6i DMA drivers is used on A64 and H6 boards.

Enable it as a module.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 0dc34e0..a45c4dc 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -615,6 +615,7 @@
 CONFIG_RTC_DRV_XGENE=y
 CONFIG_DMADEVICES=y
 CONFIG_DMA_BCM2835=m
+CONFIG_DMA_SUN6I=m
 CONFIG_K3_DMA=y
 CONFIG_MV_XOR=y
 CONFIG_MV_XOR_V2=y