uhci-platform: Change compatible string from platform-uhci to generic-uhci

This brings the uhci-platform bindings in sync with what we've done for
the ohci- and ehci-platform drivers. As discussed there using platform as a
prefix is a bit weird as the platform bus is a Linux specific thing and
the bindings are supposed to be OS agnostic.

Note that the old platform-uhci compatible string is kept around for, well,
compatibility reasons.

While at it rename the bindings txt file to match the name of all the
other ?hci-platform bindings docs.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/uhci-platform.c b/drivers/usb/host/uhci-platform.c
index 44e6c9d..01833ab 100644
--- a/drivers/usb/host/uhci-platform.c
+++ b/drivers/usb/host/uhci-platform.c
@@ -148,6 +148,7 @@
 }
 
 static const struct of_device_id platform_uhci_ids[] = {
+	{ .compatible = "generic-uhci", },
 	{ .compatible = "platform-uhci", },
 	{}
 };