ARM: dts: qcom: msm8960: use SoC-specific compatibles for SAW2 devices

There is no such thing as a generic 'SAW2' device. Use device-specific
compatible strings to describe the SAW2 devices.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240102-saw2-spm-regulator-v7-8-0472ec237f49@linaro.org


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