brcm63xx: add USB support to BCM6318

BCM6318 has a special initialization sequence which involves touching
PLL control registers in the USBH_PRIV register space, as well as
toggling a bit the Simulation control register.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39302 3c298f89-4303-0410-b956-a3cf2f4a3e73
lantiq: Add support for Astoria ARV7510PW22

This board is pretty similar to ARV752DPW22.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39303 3c298f89-4303-0410-b956-a3cf2f4a3e73