msm: perf: Relax Column exclusion checks for L2CC events

Identical L2CC events with the same register, code and group
can be set up with individual origin filters. The hardware
restricts counting only for identical register and group settings
but a different value for the event code.

Detect such identical events and let them pass the constraint
checks.

Change-Id: I609defb5c5b070b1007b2e7db9e2d8315d2ba1d7
Signed-off-by: Ashwin Chaugule <ashwinc@codeaurora.org>