Revert "arm: mxs: Add support for generating signed BootStream"

This reverts commit 53e6b14e037c9f72e6d03244c32d8d597e2e0234.

Patch does not merge anymore with u-boot-arm and must be rebased.

Signed-off-by: Stefano Babic <sbabic@denx.de>
3 files changed