ARM: dts: msm: Add CPR regulator device node for 8939 V3.0

Add the cpr-regulator device for VDD_APC voltage rail.
VDD_APC powers both APC0 and APC1 clusters. This allows
the APC power rail voltage to be set based upon corners
requested from the cpr-regulator device as well as CPR
hardware recommendations.

Change-Id: Ie0b9477febdcfa5959928f5f8a58ef33999eb5f0
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>
Signed-off-by: Sridhar Gujje <sgujje@codeaurora.org>
Signed-off-by: Bharat Pawar <bpawar@codeaurora.org>
Signed-off-by: Nirmal Abraham <nabrah@codeaurora.org>