HID: lg: fix ReportDescriptor for Logitech Formula Vibration

commit 7f50547059bd55ac6a98c29fd1989421bdc36ec9 upstream.

By default the Logitech Formula Vibration presents a combined accel/brake
axis ('Y'). This patch modifies the HID descriptor to present seperate
accel/brake axes ('Y' and 'Z').

Signed-off-by: Simon Wood <simon@mungewell.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>