New section Touchpad added to the manual. Gigabeatfx and
SansaFuze+ entries added for touchpad sensitivity setting.
Change-Id: I0c5a173d6ad479c4e6995cf5045d90da6cc216ab
Reviewed-on: http://gerrit.rockbox.org/689
Reviewed-by: Benjamin Brown <foolshperson@gmail.com>
Tested: Benjamin Brown <foolshperson@gmail.com>
Reviewed-by: Michael Giacomelli <giac2000@hotmail.com>
