Several HM-801 DAPs have another buttons circuit. This patch adds support for such devices so they could work properly. Change-Id: Ic49e8e46b3e785b91c7c4706003fac3dbc20ae59
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30765 a1c6a512-1295-4272-9138-f99709370657
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29935 a1c6a512-1295-4272-9138-f99709370657