vexpress_aemv8: 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>

include/configs/vexpress_aemv8.h

@@ -179,7 +179,6 @@
 		"  bootm ${boot_addr_r} ${boot_addr_r} ${fdt_addr_r};"	\
 		"else"							\
 		"  if load hostfs - ${kernel_addr_r} ${kernel_name}; then"	\
-		"    setenv fdt_high 0xffffffffffffffff;"		\
 		"    setenv initrd_high 0xffffffffffffffff;"		\
 		"    if test -n load hostfs - ${fdt_addr_r} ${fdtfile}; then"			\
 		"        fdt move $fdtcontroladdr $fdt_addr_r;"			\