HID: wacom: Correct Intuos Pro 2 resolution

The features struct for the second gen Intuos Pro uses the wrong constant for
the resolution. This fix is for commit 4922cd26.

Fixes: 4922cd26

 ("HID: wacom: Support 2nd-gen Intuos Pro's Bluetooth classic interface")
Signed-off-by: Aaron Armstrong Skomra <skomra@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>