ARM: dts: msm: raise APCC CPR floor to 625 mV for CPR Rev < 6 on msm8996v3

A small fraction of MSM8996v3 parts with CPR revision 0 to 5 may
not operate properly at very low VDD_APCC voltages.  Therefore
increase the VDD_APCC CPR floor voltage for these parts to 625 mV
in order to guarantee stable operation.

Also change the maximum CPR floor to ceiling voltage range from
80 mV to 50 mV for all MinSVS and LowSVS corners in order to
ensure stable operation.

Change-Id: I71c32aac8ef7d54dfcf48098aaf5d5909762df15
CRs-Fixed: 981898
Signed-off-by: David Collins <collinsd@codeaurora.org>