arm64: dts: qcom: msm8994-kitakami: Add Synaptics RMI touchscreen

All Kitakami phones use Synaptics RMI4 touchscreens
attached to the same i2c bus. Configure and enable it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210118162432.107275-6-konrad.dybcio@somainline.org


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