USB: EHCI: remove ehci_port_power() routine

This patch (as1623) removes the ehci_port_power() routine and all the
places that call it.  There's no reason for ehci-hcd to change the
port power settings; the hub driver takes care of all that stuff.

There is one exception: When the controller is resumed from
hibernation or following a loss of power, the ports that are supposed
to be handed over to a companion controller must be powered on first.
Otherwise the handover won't work.  This process is not visible to the
hub driver, so it has to be handled in ehci-hcd.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/mips/ath79/dev-usb.c

@@ -50,13 +50,11 @@ static u64 ath79_ehci_dmamask = DMA_BIT_MASK(32);
 
 static struct usb_ehci_pdata ath79_ehci_pdata_v1 = {
 	.has_synopsys_hc_bug	= 1,
-	.port_power_off		= 1,
 };
 
 static struct usb_ehci_pdata ath79_ehci_pdata_v2 = {
 	.caps_offset		= 0x100,
 	.has_tt			= 1,
-	.port_power_off		= 1,
 };
 
 static struct platform_device ath79_ehci_device = {