kms/vc4_hdmi: Refuse 4096x2160@60 hdmi modes
These are no reliable without overclocking. See: https://github.com/raspberrypi/linux/issues/5034 Signed-off-by:Dom Cobley <popcornmix@gmail.com>
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These are no reliable without overclocking. See: https://github.com/raspberrypi/linux/issues/5034 Signed-off-by:Dom Cobley <popcornmix@gmail.com>