linux/modules/proc_setroot: support Linux 5.6
linux/modules/proc_setroot: support Linux 5.6

Commit d56c0d45f0e2 ("proc: decouple proc from VFS with "struct
proc_ops"", merged in Linux 5.6) introduced struct proc_ops to define
operations for files in /proc.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d56c0d45f0e27f814e87a1676b6bdccccbc252e9

fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared