ARM: dts: msm: update voltage limits for SDM632

Update min and max voltage limits for SDM632 regulators.
While at it, update APC CPR configuration as per voltage
plan.

Change-Id: Ibaaefb3f3d1662927097601cc8a50317f3539d71
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>