Enable USB EHCI hub options to bring ixp4xx kernel usb support in line with known good nslu2-linux kernel usb hub settings.

SVN-Revision: 7785

target/linux/ixp4xx-2.6/config/default

@@ -464,9 +464,9 @@ CONFIG_UID16=y
 # CONFIG_USBPCWATCHDOG is not set
 CONFIG_USB_BANDWIDTH=y
 CONFIG_USB_EHCI_HCD=m
-# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
-# CONFIG_USB_EHCI_SPLIT_ISO is not set
-# CONFIG_USB_EHCI_TT_NEWSCHED is not set
+CONFIG_USB_EHCI_ROOT_HUB_TT=y
+CONFIG_USB_EHCI_SPLIT_ISO=y
+CONFIG_USB_EHCI_TT_NEWSCHED=y
 # CONFIG_USB_GTCO is not set
 CONFIG_USB_OHCI_HCD=m
 CONFIG_USB_UHCI_HCD=m