Falcon spi accesses some ebu functions which are not exported and can
not be accessed when build as module. Make this module bool instead.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Acked-by: NThomas Langer <thomas.langer@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>