configs: am64x_evm_a53: Enable support for building multiple dtbs

Enable all relevant configs for building multiple dtbs into a single fit
image and load the right dtb for next stage.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/configs/am64x_evm_a53_defconfig b/configs/am64x_evm_a53_defconfig
index ab87e98..0e942e3 100644
--- a/configs/am64x_evm_a53_defconfig
+++ b/configs/am64x_evm_a53_defconfig
@@ -28,6 +28,7 @@
 CONFIG_SPL_STACK_R=y
 CONFIG_SPL_SEPARATE_BSS=y
 CONFIG_SPL_DMA=y
+CONFIG_SPL_I2C_SUPPORT=y
 CONFIG_SPL_DM_MAILBOX=y
 CONFIG_SPL_DM_SPI_FLASH=y
 CONFIG_SPL_POWER_DOMAIN=y
@@ -41,6 +42,8 @@
 CONFIG_CMD_TIME=y
 CONFIG_OF_CONTROL=y
 CONFIG_SPL_OF_CONTROL=y
+CONFIG_OF_LIST="k3-am642-evm k3-am642-sk"
+CONFIG_MULTI_DTB_FIT=y
 CONFIG_SPL_MULTI_DTB_FIT=y
 CONFIG_SPL_MULTI_DTB_FIT_NO_COMPRESSION=y
 CONFIG_ENV_IS_NOWHERE=y