drm/i915/perf: Pass i915 object to perf revision helper

In some cases, perf revision may rely on specific steppings of a
platform. To determine the platform, pass i915 object to the perf
revision helper.

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323225901.3743681-11-umesh.nerlige.ramappa@intel.com