configs: phycore_am62x_a53_defconfig: Enable ENV_IS_IN_SPI_FLASH

Enable ENV_IS_IN_SPI_FLASH to read the environment from the SPI
flash when booting from it. The oftree, kernel and ramdisk sizes
are located in this environment and therefore required to boot
an initramfs.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Reviewed-by: Wadim Egorov <w.egorov@phytec.de>
diff --git a/configs/phycore_am62x_a53_defconfig b/configs/phycore_am62x_a53_defconfig
index 0494fc4..d7aa59b 100644
--- a/configs/phycore_am62x_a53_defconfig
+++ b/configs/phycore_am62x_a53_defconfig
@@ -13,6 +13,7 @@
 CONFIG_SF_DEFAULT_SPEED=25000000
 CONFIG_ENV_SIZE=0x20000
 CONFIG_ENV_OFFSET=0x680000
+CONFIG_ENV_SECT_SIZE=0x20000
 CONFIG_SPL_DM_SPI=y
 CONFIG_DEFAULT_DEVICE_TREE="ti/k3-am625-phyboard-lyra-rdk"
 CONFIG_OF_LIBFDT_OVERLAY=y
@@ -84,6 +85,7 @@
 CONFIG_ENV_OVERWRITE=y
 CONFIG_ENV_IS_NOWHERE=y
 CONFIG_ENV_IS_IN_MMC=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_SYS_MMC_ENV_DEV=1
 CONFIG_NET_RANDOM_ETHADDR=y