kernel: crypto: fix ubsec_ssb.c compilation with 4.0+

SSB_DEVTABLE_END was removed in 4.0 by upstream commit 673e2baaa6d9
("treewide: Remove unnecessary SSB_DEVTABLE_END macro").

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 47047