arm64: zynqmp: Handle CONFIG_BOARD_LATE_INIT via Kconfig

Disable BOARD_LATE_INIT via Kconfig.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/zynq_cse_nand_defconfig b/configs/zynq_cse_nand_defconfig
index ae5a696..44ad5bd 100644
--- a/configs/zynq_cse_nand_defconfig
+++ b/configs/zynq_cse_nand_defconfig
@@ -6,6 +6,7 @@
 CONFIG_SPL=y
 CONFIG_SPL_STACK_R_ADDR=0x200000
 CONFIG_SYS_MALLOC_LEN=0x1000
+# CONFIG_BOARD_LATE_INIT is not set
 # CONFIG_DISPLAY_CPUINFO is not set
 CONFIG_SPL_STACK_R=y
 CONFIG_SYS_PROMPT="Zynq> "