bootm: Adjust how the board is reset

Use reset_cpu() to reset the board, copying the logic from the 'reset'
command. This makes more sense than directly calling the do_reset()
function with the arguments passsed to the bootm command.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
diff --git a/boot/bootm.c b/boot/bootm.c
index 301cfde..8a0dba5 100644
--- a/boot/bootm.c
+++ b/boot/bootm.c
@@ -1140,10 +1140,12 @@
 	if (iflag)
 		enable_interrupts();
 
-	if (ret == BOOTM_ERR_UNIMPLEMENTED)
+	if (ret == BOOTM_ERR_UNIMPLEMENTED) {
 		bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
-	else if (ret == BOOTM_ERR_RESET)
-		do_reset(cmdtp, flag, argc, argv);
+	} else if (ret == BOOTM_ERR_RESET) {
+		printf("Resetting the board...\n");
+		reset_cpu();
+	}
 
 	return ret;
 }