board: ti: am62x: Set fdtfile from C code instead of findfdt script

Stop using the findfdt script and switch to setting the fdtfile from
C code.

While at this, replace findfdt in environment with a warning as it is
no longer needed

Reviewed-by: Jonathan Humphreys <j-humphreys@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: Nishanth Menon <nm@ti.com>
diff --git a/board/ti/am62x/evm.c b/board/ti/am62x/evm.c
index 88e0215..b3e8680 100644
--- a/board/ti/am62x/evm.c
+++ b/board/ti/am62x/evm.c
@@ -19,6 +19,8 @@
 #include <asm/arch/hardware.h>
 #include <dm/uclass.h>
 
+#include "../common/fdt_ops.h"
+
 DECLARE_GLOBAL_DATA_PTR;
 
 #if CONFIG_IS_ENABLED(SPLASH_SCREEN)
@@ -53,6 +55,14 @@
 {
 	return fdtdec_setup_mem_size_base();
 }
+
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+	ti_set_fdt_env(NULL, NULL);
+	return 0;
+}
+#endif
 
 int dram_init_banksize(void)
 {