configs: am65x_evm_a53: Enable CONFIG_OF_BOARD_SETUP

Enable CONFIG_OF_BOARD_SETUP so that msmc sram dt nodes
are updated correctly.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/configs/am65x_evm_a53_defconfig b/configs/am65x_evm_a53_defconfig
index c058b75..724b4bc 100644
--- a/configs/am65x_evm_a53_defconfig
+++ b/configs/am65x_evm_a53_defconfig
@@ -15,6 +15,7 @@
 CONFIG_NR_DRAM_BANKS=2
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_SPL_LOAD_FIT=y
+CONFIG_OF_BOARD_SETUP=y
 CONFIG_BOOTCOMMAND="run findfdt; run envboot; run init_${boot}; run get_kern_${boot}; run get_fdt_${boot}; run run_kern"
 # CONFIG_DISPLAY_CPUINFO is not set
 CONFIG_SPL_SYS_MALLOC_SIMPLE=y