ARM: imx: mx5: Enable Thumb2 build on MX53 Menlo board

Build U-Boot in Thumb2 mode for M53Menlo board, this makes better
use of the CPU since the instruction density is higher.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
1 file changed