configs: imx8m{m,n}_venice_defconfig: add usb support

Enable USB support for host controller and various USB ethernet
devices.

Example usage of USB Mass Storage (UMS) support:
 u-boot=> mmc list
 FSL_SDHC: 0
 FSL_SDHC: 1
 FSL_SDHC: 2 (eMMC)
 u-boot=> ums 0 mmc 2
 UMS: LUN 0, dev mmc 2, hwpart 0, sector 0x0, count 0xe30000

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
4 files changed