csky: Enable seccomp architecture tracking

stable inclusion
from stable-5.11-rc1
commit 6e9ae6f9
bugzilla: 167382
CVE: N/A

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6e9ae6f98809e0d123ff4d769ba2e6f652119138

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

To enable seccomp constant action bitmaps, we need to have a static
mapping to the audit architecture and system call table size. Add these
for csky.
Signed-off-by: NYiFei Zhu <yifeifz2@illinois.edu>
Signed-off-by: NKees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/f9219026d4803b22f3e57e3768b4e42e004ef236.1605101222.git.yifeifz2@illinois.eduSigned-off-by: NGONG, Ruiqi <gongruiqi1@huawei.com>
Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com>
Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/csky/include/asm/Kbuild

@@ -3,6 +3,5 @@ generic-y += asm-offsets.h
 generic-y += gpio.h
 generic-y += kvm_para.h
 generic-y += qrwlock.h
-generic-y += seccomp.h
 generic-y += user.h
 generic-y += vmlinux.lds.h

arch/csky/include/asm/seccomp.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef _ASM_SECCOMP_H
+#define _ASM_SECCOMP_H
+
+#include <asm-generic/seccomp.h>
+
+#define SECCOMP_ARCH_NATIVE		AUDIT_ARCH_CSKY
+#define SECCOMP_ARCH_NATIVE_NR		NR_syscalls
+#define SECCOMP_ARCH_NATIVE_NAME	"csky"
+
+#endif /* _ASM_SECCOMP_H */