board: ti: j721e: Set fdtfile from C code instead of findfdt script

We now can provide a map and have the standard fdtfile variable set from
code itself. This allows for bootstd to "just work".

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/j721e/evm.c b/board/ti/j721e/evm.c
index b77cffc..9dc3ed6 100644
--- a/board/ti/j721e/evm.c
+++ b/board/ti/j721e/evm.c
@@ -16,6 +16,7 @@
 #include <dm.h>
 
 #include "../common/board_detect.h"
+#include "../common/fdt_ops.h"
 
 #define board_is_j721e_som()	(board_ti_k3_is("J721EX-PM1-SOM") || \
 				 board_ti_k3_is("J721EX-PM2-SOM"))
@@ -353,6 +354,12 @@
 #endif
 
 #ifdef CONFIG_BOARD_LATE_INIT
+static struct ti_fdt_map ti_j721e_evm_fdt_map[] = {
+	{"j721e", "k3-j721e-common-proc-board.dtb"},
+	{"j721e-sk", "k3-j721e-sk.dtb"},
+	{"j7200", "k3-j7200-common-proc-board.dtb"},
+	{ /* Sentinel. */ }
+};
 static void setup_board_eeprom_env(void)
 {
 	char *name = "j721e";
@@ -372,6 +379,7 @@
 
 invalid_eeprom:
 	set_board_info_env_am6(name);
+	ti_set_fdt_env(name, ti_j721e_evm_fdt_map);
 }
 
 static void setup_serial(void)