spl: Rename jump_to_image_no_args()

spl: Rename jump_to_image_no_args()

This function is currently a misnomer at times as we have cases where it
passes arguments to the image. In preparation for making that be a more
common case rename this function to jump_to_image(...). In order to do
this, rename jump_to_image in board_init_r(...) to jumper so that we do
not have a conflict.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Reword the commit message, adding missing cases of
        jump_to_image_no_args()]
Signed-off-by: Tom Rini <trini@konsulko.com>