security: replace strict_strto*() with kstrto*()

The usage of strict_strto*() is not preferred, because
strict_strto*() is obsolete. Thus, kstrto*() should be
used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 5122aff..170b4b1 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -54,7 +54,7 @@
 static int __init checkreqprot_setup(char *str)
 {
 	unsigned long checkreqprot;
-	if (!strict_strtoul(str, 0, &checkreqprot))
+	if (!kstrtoul(str, 0, &checkreqprot))
 		selinux_checkreqprot = checkreqprot ? 1 : 0;
 	return 1;
 }