s390/kernel: unify EX_TABLE* implementations

Replace three implementations with one using using __stringify_in_c
macro conveniently "borrowed" from powerpc and microblaze.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2 files changed