mx53cx9020: 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/mx53cx9020.h

@@ -40,7 +40,6 @@
 	"scriptaddr=0x74000000\0" \
 	"ramdisk_addr_r=0x80000000\0" \
 	"kernel_addr_r=0x72000000\0"  \
-	"fdt_high=0xffffffff\0" \
 	"console=ttymxc1,115200\0" \
 	"stdin=serial\0" \
 	"stdout=serial,vidconsole\0" \