board: ti: am62ax: env: Set the boot_targets

Set the default boot_targets to map up SD card as priority followed by
emmc and so on.

Signed-off-by: Nishanth Menon <nm@ti.com>
diff --git a/board/ti/am62ax/am62ax.env b/board/ti/am62ax/am62ax.env
index 2af6914..a6d967e 100644
--- a/board/ti/am62ax/am62ax.env
+++ b/board/ti/am62ax/am62ax.env
@@ -8,6 +8,7 @@
 	${mtdparts}
 run_kern=booti ${loadaddr} ${rd_spec} ${fdtaddr}
 
+boot_targets=mmc1 mmc0 usb pxe dhcp
 boot=mmc
 mmcdev=1
 bootpart=1:2