Documentation of function befs_load_cb() lists it as load_befs_sb().  Fix
the misnomer.

Link: http://lkml.kernel.org/r/1465700235-22881-2-git-send-email-luisbg@osg.samsung.comSigned-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>