ARM: dts: msm: Add snapshot of msm8953-pmi8937, msm8953-pmi8940

This is snapshot of the msm8953-pmi8937.dtsi, msm8953-pmi8940.dtsi
as of msm-3.18 commit 0f661cf3087b ("ARM: dts: msm: add support of
PMI8937/PMI8940 for MSM8953").

CRs-Fixed: 2120828
Change-Id: I0437190a4cbf878326255ea900e6f4dc2ac96e12
Signed-off-by: Umang Agrawal <uagrawal@codeaurora.org>