kabi: Add generic kabi macros

hulk inclusion
category: feature
bugzilla: 13276
CVE: NA

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

Introduce kabi macro for hulk.
Signed-off-by: NTan Xiaojun <tanxiaojun@huawei.com>
Reviewed-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

include/linux/kabi.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * kabi.h - Euler kABI abstraction header
+ *
+ * TODO: modify the comments and add more information.
+ */
+
+#ifndef _LINUX_KABI_H
+#define _LINUX_KABI_H
+
+/*
+ * TODO: add a note for this
+ */
+
+#define KABI_RESERVE(n)		unsigned long kabi_reserved##n;
+
+#endif /* _LINUX_KABI_H */