msm: camera: common: Fix types for comparison function

Creates a function to match expectant types for platform device
comparisons during component registration.

CRs-Fixed: 2584631
Change-Id: Ib07160b8d8f1a370ba535ffdbbc6adbe391c68d5
Signed-off-by: Karthik Jayakumar <kjayakum@codeaurora.org>