board: ten64: add fdt fixup to hide usb hub topology

board: ten64: add fdt fixup to hide usb hub topology

The USB Hub (microchip,usb5744) can enter a dis-/reconnect loop
if a driver tries to re-initialise the hub over I2C.

On the Ten64 board, this process only needs to be run once
per system reset cycle, which is carried out by U-Boot.

As there are distributions shipping with the affected
driver by default, the best solution is to remove
the USB hub topology information from the FDT passed
to the operating system, so the OS won't attempt
to re-initialise the USB hub under any circumstance.

Signed-off-by: Mathew McBride <matt@traverse.com.au>
Signed-off-by: Peng Fan <peng.fan@nxp.com>