s390: enable CONFIG_HARDENED_USERCOPY in debug_defconfig

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

Author: svens-s390

arch/s390/configs/debug_defconfig

@@ -692,6 +692,7 @@ CONFIG_ENCRYPTED_KEYS=m
 CONFIG_KEY_NOTIFICATIONS=y
 CONFIG_SECURITY=y
 CONFIG_SECURITY_NETWORK=y
+CONFIG_HARDENED_USERCOPY=y
 CONFIG_FORTIFY_SOURCE=y
 CONFIG_SECURITY_SELINUX=y
 CONFIG_SECURITY_SELINUX_BOOTPARAM=y