arm64: dts: qcom: sm6350-lena: Configure Samsung touchscreen

Use the generic samsung,s6sy761 touchscreen driver for this device,
together with a few pins and regulators to power it up correctly.

Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221030073232.22726-10-marijn.suijten@somainline.org