dm: sysreset: Add a standard message when doing reset

It's good to print a message when doing reset.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/sysreset/sysreset-uclass.c

@@ -69,6 +69,8 @@ void reset_cpu(ulong addr)
 
 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
+	printf("resetting ...\n");
+
 	sysreset_walk_halt(SYSRESET_COLD);
 
 	return 0;