armv8: ls1046a: enable usb in defconfig

Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/configs/ls1046ardb_emmc_defconfig b/configs/ls1046ardb_emmc_defconfig
index 0b29796..7b50fc7 100644
--- a/configs/ls1046ardb_emmc_defconfig
+++ b/configs/ls1046ardb_emmc_defconfig
@@ -33,3 +33,5 @@
 CONFIG_PCIE_LAYERSCAPE=y
 CONFIG_NETDEVICES=y
 CONFIG_E1000=y
+CONFIG_USB=y
+CONFIG_DM_USB=y