HID: multitouch: add support for Novatek touchscreen

commit 4db703ead4535792ea54dba7275fdd1527848e74 upstream.

Add support for a Novatek touchscreen panel as a generic HID multitouch
panel.

Signed-off-by: Austin Hendrix <ahendrix@willowgarage.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>