microblaze: spl: wrap spl_start_uboot() in SPL_OS_BOOT ifdefs

Make spl_start_uboot() available only if CONFIG_SPL_OS_BOOT is enabled,
since it is only used for falcon mode.

Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Link: https://lore.kernel.org/r/20230125164157.1638680-1-ovpanait@gmail.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
1 file changed