dm: sysreset: wait after reset message

In our Python tests we expect to see the word "resetting". It may be
truncated if we reset before the serial console buffer is transferred.

Wait for 100 ms between the "resetting ..." message and the actual reset
like we do when powering off.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/drivers/sysreset/sysreset-uclass.c b/drivers/sysreset/sysreset-uclass.c
index 995240f..3f5414e 100644
--- a/drivers/sysreset/sysreset-uclass.c
+++ b/drivers/sysreset/sysreset-uclass.c
@@ -117,6 +117,7 @@
 int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	printf("resetting ...\n");
+	mdelay(100);
 
 	sysreset_walk_halt(SYSRESET_COLD);