update_engine: uint64_t of partition size am: f1a360beb5 am: cf8918b60b

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/3280978

Change-Id: Ic33d42ed5248b674876e847a66cde0a2039f32ee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>