arm64: defconfig: Enable SDMA on i.mx8mq/8mm

Enable SDMA support on i.mx8mq/8mm chips, including enabling
CONFIG_FW_LOADER_USER_HELPER/CONFIG_FW_LOADER_USER_HELPER_FALLBACK
for firmware loaded by udev.
Signed-off-by: NRobin Gong <yibin.gong@nxp.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm64/configs/defconfig

@@ -196,6 +196,8 @@ CONFIG_PCIE_HISI_STB=y
 CONFIG_PCIE_TEGRA194=m
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
 CONFIG_HISILICON_LPC=y
 CONFIG_SIMPLE_PM_BUS=y
 CONFIG_MTD=y
@@ -651,6 +653,7 @@ CONFIG_DMADEVICES=y
 CONFIG_FSL_EDMA=y
 CONFIG_DMA_BCM2835=m
 CONFIG_DMA_SUN6I=m
+CONFIG_IMX_SDMA=y
 CONFIG_K3_DMA=y
 CONFIG_MV_XOR=y
 CONFIG_MV_XOR_V2=y