arm: dts: k3-j721s2|am68: Migrate to OF_UPSTREAM

Use OF_UPSTREAM to pull Linux DT from dts/ tree

Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
diff --git a/configs/j721s2_evm_a72_defconfig b/configs/j721s2_evm_a72_defconfig
index dd86b5c..5ed8d00 100644
--- a/configs/j721s2_evm_a72_defconfig
+++ b/configs/j721s2_evm_a72_defconfig
@@ -13,7 +13,7 @@
 CONFIG_ENV_SIZE=0x20000
 CONFIG_DM_GPIO=y
 CONFIG_SPL_DM_SPI=y
-CONFIG_DEFAULT_DEVICE_TREE="k3-j721s2-common-proc-board"
+CONFIG_DEFAULT_DEVICE_TREE="ti/k3-j721s2-common-proc-board"
 CONFIG_SPL_TEXT_BASE=0x80080000
 CONFIG_OF_LIBFDT_OVERLAY=y
 CONFIG_DM_RESET=y
@@ -84,8 +84,9 @@
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_OF_CONTROL=y
 CONFIG_SPL_OF_CONTROL=y
-CONFIG_OF_LIST="k3-j721s2-common-proc-board"
+CONFIG_OF_LIST="ti/k3-j721s2-common-proc-board"
 CONFIG_SPL_MULTI_DTB_FIT=y
+CONFIG_OF_UPSTREAM=y
 CONFIG_SPL_MULTI_DTB_FIT_NO_COMPRESSION=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y