usb: host: dwc2: disable hnp and srp default for rockchip platform

Due to rockchip platform use live-tree which deployed from linux kernel,
so abandon the previous 'hnp-srp-disable' DT property and disable hnp and
srp default at probe time.

Change-Id: I5fb34bc789812d463b6a3c42b268af447d130950
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>

drivers/usb/host/dwc2.c

@@ -1263,6 +1263,10 @@ static int dwc2_usb_probe(struct udevice *dev)
 
 	bus_priv->desc_before_addr = true;
 
+#ifdef CONFIG_ARCH_ROCKCHIP
+	priv->hnp_srp_disable = true;
+#endif
+
 	return dwc2_init_common(dev, priv);
 }