imx: cx9020: migrate cx9020 to CONFIG_DM_USB

Note: gpio7_8 was never used for usb power regulator so we remove it here

Acked-by: Patrick Bruenn <p.bruenn@beckhoff.com>
Signed-off-by: Steffen Dirkwinkel <s.dirkwinkel@beckhoff.com>
3 files changed