migrate gateworks board support to the new at24 eeprom driver

...2.6.27/450-i2c_at24_add_kernel_interface_read_write.patch

target/linux/ixp4xx/config-2.6.27

...et/linux/ixp4xx/patches-2.6.27/010-ixp43x_pci_fixup.patch

target/linux/ixp4xx/patches-2.6.27/190-cambria_support.patch

...nux/ixp4xx/patches-2.6.27/191-cambria_optional_uart.patch

...linux/ixp4xx/patches-2.6.27/192-cambria_gpio_device.patch

...linux/ixp4xx/patches-2.6.27/294-eeprom_new_notifier.patch

...linux/ixp4xx/patches-2.6.27/296-avila_mac_plat_info.patch

target/linux/ixp4xx/patches-2.6.27/300-avila_fetch_mac.patch

target/linux/ixp4xx/patches-2.6.27/301-avila_led.patch

...t/linux/ixp4xx/patches-2.6.27/302-avila_gpio_device.patch

...ux/ixp4xx/patches-2.6.27/303-avila_gw23x7_phy_quirk.patch