The bootparams do not have to be at fixed location, they can be
dynamically mallocated instead. Make it so to get rid of another
fixed assignment.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Biju Das <biju.das.jz@bp.renesas.com>
Cc: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>