power: regulator: tps6236x: add support for tps6236x regulators

TPS6236x is a family of step down DC-DC converters optimized for battery
powered portable applications for a small solution size. Add a regulator
driver for supporting these devices.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
3 files changed