fs/ntfs3: Fix hidedotfiles mount option by reversing behaviour

Currently, the hidedotfiles mount option is behaving in the reverse
way of what would be expected: enabling it disables setting the
hidden attribute on files or directories with names starting with a
dot and disabling it enables the setting.

Reverse the behaviour of the hidedotfiles mount option so it matches
what is expected.
Signed-off-by: Daniel Pinto <danielpinto52@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

fs/ntfs3/super.c

@@ -361,7 +361,7 @@ static int ntfs_fs_parse_param(struct fs_context *fc,
 		opts->nohidden = result.negated ? 1 : 0;
 		break;
 	case Opt_hide_dot_files:
-		opts->hide_dot_files = result.negated ? 1 : 0;
+		opts->hide_dot_files = result.negated ? 0 : 1;
 		break;
 	case Opt_windows_names:
 		opts->windows_names = result.negated ? 0 : 1;