BugLink: http://bugs.launchpad.net/bugs/1621113

commit 611a1507 upstream.

No asics supported by amdgpu support analog TV.

Workaround for bug:
https://bugs.freedesktop.org/show_bug.cgi?id=97460Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>