ehci-hcd: Add init_after_reset

Some host controllers need addidional initialization after ehci_reset()
In non-dm implementation it is possible to use CONFIG_EHCI_HCD_INIT_AFTER_RESET.
This patch adds similar option to ehci drivers using dm.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 0113c6c..598f444 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1615,6 +1615,12 @@
 	if (ret)
 		goto err;
 
+	if (ops->init_after_reset) {
+		ret = ops->init_after_reset(ctrl);
+		if (ret)
+			goto err;
+	}
+
 	ret = ehci_common_init(ctrl, tweaks);
 	if (ret)
 		goto err;
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 826b3fe..734d7f0 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -240,6 +240,7 @@
 	void (*powerup_fixup)(struct ehci_ctrl *ctrl, uint32_t *status_reg,
 			      uint32_t *reg);
 	uint32_t *(*get_portsc_register)(struct ehci_ctrl *ctrl, int port);
+	int (*init_after_reset)(struct ehci_ctrl *ctrl);
 };
 
 struct ehci_ctrl {