arm64: defconfig: enable XORv2 for Marvell Armada 7K/8K

This commit enables the XORv2 DMA driver, which is used on the ARM64
Marvell Armada 7K and 8K platforms.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm64/configs/defconfig

@@ -409,6 +409,7 @@ CONFIG_RTC_DRV_TEGRA=y
 CONFIG_RTC_DRV_XGENE=y
 CONFIG_RTC_DRV_S3C=y
 CONFIG_DMADEVICES=y
+CONFIG_MV_XOR_V2=y
 CONFIG_PL330_DMA=y
 CONFIG_DMA_BCM2835=m
 CONFIG_TEGRA20_APB_DMA=y