arm64: dts: qcom: msm8998: Add capacity-dmips-mhz to CPU cores

Add capacity-dmips-mhz to ensure the scheduler can efficiently
make use of the big.LITTLE core configuration.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Link: https://lore.kernel.org/r/20210109163001.146867-5-konrad.dybcio@somainline.org


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