siemens: change LED indication in DFU mode

In order to have the same LED indication like in another product
when ready for updating, enable only red led and disable status
LED when entering DFU mode.

The status LED is only switched off when defined in board file.

Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/siemens-am33x-common.h b/include/configs/siemens-am33x-common.h
index 721c4e6..261b348 100644
--- a/include/configs/siemens-am33x-common.h
+++ b/include/configs/siemens-am33x-common.h
@@ -402,7 +402,11 @@
 	"dfu_args=run bootargs_defaults;" \
 		"setenv bootargs ${bootargs} ;" \
 		"mtdparts default; " \
-		"dfu 0 nand 0; \0" \
+		"led dfu 1;" \
+		"led stat 0;" \
+		"dfu 0 nand 0;" \
+		"led dfu 0;" \
+		"led stat 1;\0" \
 		"dfu_alt_info=" DFU_ALT_INFO_NAND "\0" \
 	"net_args=run bootargs_defaults;" \
 		"mtdparts default;" \