gw_ventana: Stop disabling device tree relocation

Remove setting of fdt_high to ~0, which disables device tree relocation,
from the default environment. Doing so prevents U-Boot from correcting
problems such as having an unaligned device tree and leads to various
failure modes in the OS.

Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-By: Tim Harvey <tharvey@gateworks.com>

board/gateworks/gw_ventana/gw_ventana.env

@@ -13,7 +13,6 @@ hwconfig=_UNKNOWN_
 disk=0
 part=1
 
-fdt_high=0xffffffff
 fdt_addr=0x18000000
 initrd_high=0xffffffff
 fixfdt=fdt addr ${fdt_addr}