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.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>