HID: roccat: correction and cleanup of HID feature reports

Removed analog feature report enums and modified code in roccat_common
to reflect this. Non standard conform Kone got its own copy of the old
code. That helps extracting more generalizations for newer devices.

Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>