VFS: add flags arg to VOP_STAT() and VOP_GETATTR()

[emaste]

Also add flags to VOP_ATTRIB.9

[kib]

In D46709#1065003, @emaste wrote:

Also add flags to VOP_ATTRIB.9

Done is separate commit.

[emaste]

/home/emaste/src/freebsd-git/wipbsd/sys/security/audit/audit_arg.c:874:53: error: too few arguments to function call, expected 4, have 3
  874 |         error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
      |                 ~~~~~~~~~~~                                ^

[kib]

In D46709#1065095, @emaste wrote:

/home/emaste/src/freebsd-git/wipbsd/sys/security/audit/audit_arg.c:874:53: error: too few arguments to function call, expected 4, have 3
  874 |         error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
      |                 ~~~~~~~~~~~                                ^

Fixed, the whole patch series is available at https://kib.kiev.ua/git/gitweb.cgi?p=deviant3.git;a=shortlog;h=refs/heads/noautomount

[emaste]

Also sys/dev/xen/blkback/blkback.c. My wip build was successful patching audit and xen; I didn't look for other VOP_GETATTR cases.