ARM: AM57xx: Make FIT boot as default boot on HS devices

Verification has to be done before booting any images on HS devices. So
default the boot to FIT on HS devices.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index f3e3f0b..d162d34 100644
--- a/board/ti/am57xx/board.c
+++ b/board/ti/am57xx/board.c
@@ -386,6 +386,14 @@
 	 * This is the POWERHOLD-in-Low behavior.
 	 */
 	palmas_i2c_write_u8(TPS65903X_CHIP_P1, 0xA0, 0x1);
+
+	/*
+	 * Default FIT boot on HS devices. Non FIT images are not allowed
+	 * on HS devices.
+	 */
+	if (get_device_type() == HS_DEVICE)
+		setenv("boot_fit", "1");
+
 	return 0;
 }