hw/arm: Remove 'cheetah' machine

The 'cheetah' machine has been deprecated since 9.0, so we can
remove it for the 9.2 release.

(tsc210x.c is also used by nseries, so move its MAINTAINER file
line there; the nseries boards are also about to be removed.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240903160751.4100218-9-peter.maydell@linaro.org
7 files changed