board: gateworks: venice: fix gw7904

Add missing imx8mm-venice-gw7904 to CONFIG_OF_LIST

Fixes commit 61e7f9732565 ("board: gateworks: venice: add imx8mm-gw7904 support")
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
diff --git a/configs/imx8mm_venice_defconfig b/configs/imx8mm_venice_defconfig
index a485910..4fba8eb 100644
--- a/configs/imx8mm_venice_defconfig
+++ b/configs/imx8mm_venice_defconfig
@@ -75,7 +75,7 @@
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_OF_CONTROL=y
 CONFIG_SPL_OF_CONTROL=y
-CONFIG_OF_LIST="imx8mm-venice imx8mm-venice-gw71xx-0x imx8mm-venice-gw72xx-0x imx8mm-venice-gw73xx-0x imx8mm-venice-gw7901 imx8mm-venice-gw7902 imx8mm-venice-gw7903"
+CONFIG_OF_LIST="imx8mm-venice imx8mm-venice-gw71xx-0x imx8mm-venice-gw72xx-0x imx8mm-venice-gw73xx-0x imx8mm-venice-gw7901 imx8mm-venice-gw7902 imx8mm-venice-gw7903 imx8mm-venice-gw7904"
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_SYS_MMC_ENV_DEV=2