s390: enable bpf jit by default when not built as always-on

This is the s390 variant of commit 81c22041d9f1 ("bpf, x86, arm64:
Enable jit by default when not built as always-on").

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 6b1f715..f4ff75f 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -109,6 +109,7 @@
 	select ARCH_USE_BUILTIN_BSWAP
 	select ARCH_USE_CMPXCHG_LOCKREF
 	select ARCH_WANTS_DYNAMIC_TASK_STRUCT
+	select ARCH_WANT_DEFAULT_BPF_JIT
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select BUILDTIME_TABLE_SORT
 	select CLONE_BACKWARDS2