arm64: dts: qcom: qcm2290: Add LMH node

Add a node for the Limits Management Hardware to ensure it can be
configured by the operating system.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
[Konrad: add commit msg, rebase]
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240308-topic-rb1_lmh-v2-3-bac3914b0fe3@linaro.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>