Gralloc: Use handle reserved size while importing buffer am: 0667ff33b2 am: 4227a2401a am: 080903de25

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/qcom/sm7250/display/+/22451810

Change-Id: I43d99eb141d1eac26b758601a6f5f3fc4c640b93
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>