power: regulator: max9807: add regulator support

Added a new regulator driver for the MAXIM MAX8907 PMIC, providing
essential regulator functionalities and incorporated the necessary binding
framework within the core PMIC driver.

Tested-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
5 files changed