regulator: cpr4: add online-core and temp based voltage adjustment support

Add support for hardware managed per-online-core and per-temperature
voltage adjustment. These adjustment methods may be used together or
independently. The configuration data for these adjustments including
the amount of adjustment for a given corner should be parsed from device
tree. Update the cpr3-regulator driver so that it writes the adjustment
values when enabled into the SDELTA hardware registers.

Change-Id: Idae9018f6a185202d38d210834ca337991fe83d9
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>