kallsyms: check if CONFIG_KALLSYMS=y

Only if CONFIG_KALLSYMS=y enable, node /proc/kallsyms is generated.

We need to check if this config is set or not.

Signed-off-by: Kuan-Ying Lee <kuan-ying.lee@canonical.com>
Tested-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Reviewed-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Reviewed-by: Li Wang <liwang@redhat.com>

testcases/kernel/security/kallsyms/kallsyms.c

@@ -141,5 +141,9 @@ static struct tst_test test = {
 	.setup = setup,
 	.cleanup = cleanup,
 	.max_runtime = 60,
+	.needs_kconfigs = (const char *const[]){
+		"CONFIG_KALLSYMS=y",
+		NULL
+	},
 	.test_all = test_access_kernel_address,
 };