drm/i915/perf: Do not parse context image for HSW

An earlier commit introduced a mechanism to parse the context image to
find the OA context control offset. This resulted in an NPD on haswell
when gem_context was passed into i915_perf_open_ioctl params. Haswell
does not support logical ring contexts, so ensure that the context image
is parsed only for platforms with logical ring contexts and also
validate lrc_reg_state.

v2: Fix build failure
v3: Fix checkpatch error

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/7432


Fixes: a5c3a3cb ("drm/i915/perf: Determine gen12 oa ctx offset at runtime")
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221123235342.713068-1-umesh.nerlige.ramappa@intel.com