arm64: Enable seccomp architecture tracking

stable inclusion
from stable-5.11-rc1
commit ffde7034
bugzilla: 167382
CVE: N/A

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=ffde703470b03b1000017ed35c4f90a90caa22cf

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

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 arm64.
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NGONG, Ruiqi <gongruiqi1@huawei.com>
Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/arm64/include/asm/seccomp.h

@@ -49,4 +49,13 @@ static inline const int *get_compat_mode1_syscalls(void)
 
 #include <asm-generic/seccomp.h>
 
+#define SECCOMP_ARCH_NATIVE		AUDIT_ARCH_AARCH64
+#define SECCOMP_ARCH_NATIVE_NR		NR_syscalls
+#define SECCOMP_ARCH_NATIVE_NAME	"aarch64"
+#ifdef CONFIG_COMPAT
+# define SECCOMP_ARCH_COMPAT		AUDIT_ARCH_ARM
+# define SECCOMP_ARCH_COMPAT_NR	__NR_compat_syscalls
+# define SECCOMP_ARCH_COMPAT_NAME	"arm"
+#endif
+
 #endif /* _ASM_SECCOMP_H */