arm64: dts: qcom: sm8250: align TLMM pin configuration with DT schema

arm64: dts: qcom: sm8250: align TLMM pin configuration with DT schema

DT schema expects TLMM pin configuration nodes to be named with
'-state' suffix and their optional children with '-pins' suffix.

Drop also unneeded split between mux and config.

Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220930192954.242546-2-krzysztof.kozlowski@linaro.org