Move R-Car Gen3 and Gen4 jump_to_image_no_args() into dedicated
rcar64-spl.c file. The implementation of jump_to_image_no_args()
is identical. No functional change.
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>