common: Move autoprobe out to board init

Rather than doing autoprobe within the driver model code, move it out to
the board-init code. This makes it clear that it is a separate step from
binding devices.

For now this is always done twice, before and after relocation, but we
should discuss whether it might be possible to drop the post-relocation
probe.

For boards with SPL, the autoprobe is still done there as well.

Note that with this change, autoprobe happens after the
EVT_DM_POST_INIT_R/F events are sent, rather than before.

Link: https://lore.kernel.org/u-boot/20240626235717.272219-1-marex@denx.de/

Signed-off-by: Simon Glass <sjg@chromium.org>

common/board_f.c

@@ -826,6 +826,10 @@ static int initf_dm(void)
 	if (ret)
 		return ret;
 
+	ret = dm_autoprobe();
+	if (ret)
+		return ret;
+
 	if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
 		ret = dm_timer_init();
 		if (ret)