vfs: chimera: do extra access check only for regular inodes

do not check for a file location id FsInode represents special DOT file.

Acked-by: Dmitry Litvintsev
Target: master, 0.7, 0.6
(cherry picked from commit d3ac4a165578214af64a902fcadf09134928943c)
Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>