msm: cpr-regulator: fix a bug in supporting conditional minimum voltage

The current implementation for supporting VDD_APC minimum voltage is
mistakenly raising the minimum voltage when the mem-accel fuse has been
programmed. Hence change it to raise the minimum voltage if the mem-accel
fuse has not been programmed.

Change-Id: I045410c34fdc176378462a44c94efce40ac955ea
Signed-off-by: Ke Liu <keliu@codeaurora.org>