configs: am65x: Add configs to support environment in eMMC

Add configs such that U-boot environment is in eMMC by default.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
diff --git a/configs/am65x_evm_a53_defconfig b/configs/am65x_evm_a53_defconfig
index dc89c2f..660ef6f 100644
--- a/configs/am65x_evm_a53_defconfig
+++ b/configs/am65x_evm_a53_defconfig
@@ -41,9 +41,7 @@
 CONFIG_DEFAULT_DEVICE_TREE="k3-am654-base-board"
 CONFIG_SPL_MULTI_DTB_FIT=y
 CONFIG_SPL_MULTI_DTB_FIT_NO_COMPRESSION=y
-CONFIG_ENV_IS_IN_FAT=y
-CONFIG_ENV_FAT_INTERFACE="mmc"
-CONFIG_ENV_FAT_DEVICE_AND_PART="1:1"
+CONFIG_ENV_IS_IN_MMC=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_DM=y
 CONFIG_SPL_DM=y
@@ -82,3 +80,4 @@
 CONFIG_SYSRESET=y
 CONFIG_SPL_SYSRESET=y
 CONFIG_SYSRESET_TI_SCI=y
+CONFIG_FAT_WRITE=y