This converts the following to Kconfig:
   CONFIG_VIDEO_SW_CURSOR
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@konsulko.com>
[trini: Re-convert, find all the cases where this is off]
Signed-off-by: NTom Rini <trini@konsulko.com>