arm64/config: add test config for selftesting

euler inclusion
category: feature
bugzilla: 12568
CVE: NA

----------------------------------------------

Enable some config for kernel selftesting.

lib-printf
	CONFIG_TEST_PRINTF=m
lib-bitmap
	CONFIG_TEST_BITMAP=m
static_keys
	CONFIG_TEST_STATIC_KEYS=m
sysctl
	CONFIG_TEST_SYSCTL=y
user
	CONFIG_TEST_USER_COPY=m

Signed-off-by: Cheng Jian <cj.chengjian@huawei.com>
Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: Yan Jin <yanjin.yan@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>