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

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

Change-Id: I292706c3bc10b261fa237bc7b70736623d417997
Signed-off-by: Automerger Merge Worker <[email protected]>