[PATCH] selftests/landlock: fix broken include of linux/landlock.h

[Shuah Khan]

On 8/12/22 9:29 AM, Mickaël Salaün wrote:
> Shuah, do you plan to send a pull request before merge window closes?
> 

I was hoping to do so and missed the window. Looks like more discussion
happening on this change. I will get this in for the next rc

thanks,
-- Shuah