EHCI support for AR7XXX/AR9XXX SoCs

configname: CONFIG_USB_EHCI_ATH79

Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>EHCI support for AR7XXX/AR9XXX SoCs
In linux kernel since version 3 (release Date: 2011-07-21)  
Enables support for the built-in EHCI controller present
on the Atheros AR7XXX/AR9XXX SoCs.