soc: qcom: socinfo: use pr_fmt for function prefixes in prints

Avoid the repeating "__func__" in every print to reduce code
clutter. No functional change is expected due to this.

Change-Id: I88a3d9ce22785cc9a99fa50a38ce3686cae45f2a
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>