[PATCH v2] arm: vexpress: don't reset flags in board_init for vexpress boards

[Arnaud Aujon Chevallier]

Re-submitted because of missing description and signed-off

flags reset in board_init caused bugs when executing command like editenv
because the reallocated flag was lost.

Signed-off-by: Arnaud Aujon Chevallier <arn...@intelibre.fr>