imx: imx8mq_hb: Set config to enable random local solidrun macs

This makes the default behaviour for unfused soms to generate
a local random mac address with SolidRun's OUI. This is a
much cleaner network solution for discovery than just creating
a completely random MAC address.

Signed-off-by: Jon Nettleton <jon@solid-run.com>

Author: jnettlet

configs/imx8mq_hb_defconfig

@@ -91,6 +91,8 @@ CONFIG_FIT_EXTERNAL_OFFSET=0x3000
 CONFIG_FSL_ESDHC=y
 CONFIG_MXC_GPIO=y
 CONFIG_MXC_UART=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_NET_RANDOM_ETHADDR_OUI="d0:63:b4:00:00:00"
 CONFIG_PHY=y
 # CONFIG_SPL_PHY is not set
 # CONFIG_NOP_PHY is not set