imx6: aristainetos: convert to DM_USB

Drop CONFIG_USB_MAX_CONTROLLER_COUNT and enable DM_USB
in defconfig.

Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/configs/aristainetos2_defconfig b/configs/aristainetos2_defconfig
index 3d36f38..ea60e17 100644
--- a/configs/aristainetos2_defconfig
+++ b/configs/aristainetos2_defconfig
@@ -78,11 +78,15 @@
 CONFIG_MII=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_PMIC=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_PWM_IMX=y
 CONFIG_DM_SERIAL=y
 CONFIG_SPI=y
 CONFIG_MXC_SPI=y
 CONFIG_USB=y
+CONFIG_DM_USB=y
 CONFIG_USB_STORAGE=y
 CONFIG_VIDEO_IPUV3=y
 CONFIG_VIDEO=y