i915: report GBM_BO_MAP_CACHE_CACHED iff has_llc

BUG=b:239718180, b:306548532
TEST=no artifact in Camera FOV Calibration of CtsVerifier on rex

Change-Id: Ia6a0d689fefe20e52db2c62328c97f4aa3558b63
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/5254324
Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org>
Tested-by: Chia-I Wu <olv@google.com>
Commit-Queue: Chia-I Wu <olv@google.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
1 file changed