Staging: line6: fix up my fixup for some sysfs attribute permissions

Staging: line6: fix up my fixup for some sysfs attribute permissions

commit a3a972a053010bfd61c13cfa4ce688d4eebd9a19 upstream

They should be writable by root, not readable.
Doh, stupid me with the wrong flags.

[PG: 34 doesn't have the DEVICE_ATTR chunk in pcm.c so drop that chunk]

Reported-by: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Markus Grabner <grabner@icg.tugraz.at>
Cc: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>