arm64: dts: qcom: sdm630: Fix TLMM node and pinctrl configuration

Previous pinctrl configuration was wrong. Fix it and clean up how
multi-pin states are described.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210728222542.54269-9-konrad.dybcio@somainline.org


[bjorn: Polished the commit message]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>