ARM: dts: msm: Add sdm429w pmic configuration

Add PM660 regulators and charger, fg, gpio, etc. configuration
for sdm429 wearable target (spyro).

Change-Id: I33c3114e7972e487512ca2316a60b7842dd53264
Signed-off-by: Umang Agrawal <uagrawal@codeaurora.org>