ARM: dts: msm8226: Enable JEITA for PM8026

Enable the thermal zones outlined by the JEITA specification.

This change adds the cool and warm temperature zones,
battery target voltage and maximum charge current.

CRs-Fixed: 494223
Change-Id: I6c965320e5c068de8d1a596c3688a079b5baeb4d
Signed-off-by: David Keitel <dkeitel@codeaurora.org>