ARM: dts: msm: update VDD_APC CPR voltages for msmcobalt

Update the VDD_APC0 and VDD_APC1 CPR supported corners along
with their ceiling and floor voltages. In addition, increase
the APM threshold voltage to 852 mV in agreement with the
latest hardware guidelines.

Change-Id: I62cb18f79ecfd6b3270eabeebb5eedddf59e6174
CRs-Fixed: 988269
Signed-off-by: Osvaldo Banuelos <osvaldob@codeaurora.org>