ARM: dts: qcom: apq8064: disable HDMI nodes by default

Disable HDMI nodes. Individual board can enable them if required. The
only APQ8064 board that has working HDMI output is IFC6410, which
enables these devices explicitly.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220930185236.867655-2-dmitry.baryshkov@linaro.org