usb: host: ehci-platform: add spurious_oc DT support

Over-current reporting isn't supported on some platforms such as bcm63xx.
These devices will incorrectly report over-current if this flag isn't properly
activated.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://lore.kernel.org/r/20210223174455.1378-4-noltari@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ehci-platform.c

@@ -286,6 +286,9 @@ static int ehci_platform_probe(struct platform_device *dev)
 		if (of_property_read_bool(dev->dev.of_node, "big-endian"))
 			ehci->big_endian_mmio = ehci->big_endian_desc = 1;
 
+		if (of_property_read_bool(dev->dev.of_node, "spurious-oc"))
+			ehci->spurious_oc = 1;
+
 		if (of_property_read_bool(dev->dev.of_node,
 					  "needs-reset-on-resume"))
 			priv->reset_on_resume = true;