sunxi: Enable THUMB build for the U-Boot binary

We start to get to the limit of our main U-Boot binary size (with some
boards even crossing it). Enable its build using thumb2 to get some extra
room.

Suggested-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
1 file changed