configs: phycore_am64x_a53_defconfig: Fix environment

Enable ENV_OVERWRITE to allow environment variables to be
overwritten within the board code. This is required to add
MAC addresses during SOM detection.

Additionally, set ENV_IS_NOWHERE for boot sources other than MMC.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Reviewed-by: Wadim Egorov <w.egorov@phytec.de>

diff --git a/configs/phycore_am64x_a53_defconfig b/configs/phycore_am64x_a53_defconfig
index 4a91b72..3027a94 100644 (file)
--- a/configs/phycore_am64x_a53_defconfig
+++ b/configs/phycore_am64x_a53_defconfig
@@ -89,6 +89,8 @@ CONFIG_OF_OVERLAY_LIST="ti/k3-am6xx-phycore-disable-spi-nor ti/k3-am6xx-phycore-
 CONFIG_MULTI_DTB_FIT=y
 CONFIG_SPL_MULTI_DTB_FIT=y
 CONFIG_SPL_MULTI_DTB_FIT_NO_COMPRESSION=y
+CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_NOWHERE=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_SYS_MMC_ENV_DEV=1