msm: Add proccomm regulator driver

Add a driver for the new regulator API. The driver is intended for
targets with regulators controlled through proccomm calls (such as
7x30). It is intended as a replacement for vreg.c.

To use this driver:
- Select MSM_PROC_COMM_REGULATOR for your architecture in Kconfig
- Use the regulator framework's API calls to control your regulator

Signed-off-by: Justin Paupore <jpaupore@codeaurora.org>
4 files changed